🔧 What It Is
The Hydro-X is a centralized brain for your entire grow room. Instead of individual controllers for each device, you connect everything to the Hydro-X hub, which orchestrates your entire environment based on real-time sensor data. It's like having a grow room manager that never sleeps.
Multi-Zone Control
Control up to 50 zones independently - perfect for mother rooms, veg, flower, dry rooms
Real-Time Monitoring
Track temperature, humidity, CO2, light levels, VPD, and more - all from one dashboard
Automation Triggers
Set "if this, then that" rules - e.g., "If temp >82°F, increase exhaust fan speed"
Remote Access
Monitor and control from anywhere via smartphone app or web browser
📦 System Components
Core Hardware:
- Hydro-X Pro Controller - Main hub with touchscreen display (brain of the system)
- MBS-S8 Sensor Board - Central sensor module (temp/humidity/light/CO2)
- RJ12 Cables - Connect all modules together
- LAN Cable - For WiFi/network connectivity
Sensor Modules (Add as needed):
- Temp/Humidity Stations - Additional zones (up to 50)
- CO2 Sensor - PPM monitoring and auto-dosing control
- Light Sensor - PAR/PPFD measurement
- Soil Moisture Sensor - Substrate EC and water content
- Water Temp Probe - For hydroponic reservoirs
Device Control Stations (Add as needed):
- DSC-1 Device Station - Control 2 devices (fans, dehumidifiers, etc.)
- DSD-1 Dimming Station - Control dimmable lights (0-10V protocol)
- DSP-1 Power Station - On/off control for non-dimmable equipment
- Solenoid Valves - Automated irrigation control
⚙️ Step-by-Step Setup
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Unbox & Inventory
Lay out all components. You should have: Hydro-X controller, sensor board(s), device stations, RJ12 cables, power adapters. Check TrolMaster's packing list.
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Mount the Main Controller
Install the Hydro-X Pro in a central, accessible location (not in direct light or heat). Use the included mounting bracket. Keep it within reach of power and network.
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Position Sensor Modules
Place MBS-S8 sensor boards at canopy level in each zone. Avoid direct airflow from fans or vents. Mount using zip ties or brackets. Temperature sensors should be shaded from lights.
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Connect Sensors to Controller
Run RJ12 cables from each sensor board back to the Hydro-X. Daisy-chain sensors if needed (up to 50 devices on one chain). Plug into ports labeled "Device A" or "Device B."
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Install Device Stations
Place DSC-1, DSD-1, or DSP-1 modules near the equipment they'll control. For fans, mount near the fan. For lights, near the ballast/driver. Connect to Hydro-X via RJ12.
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Wire Equipment to Device Stations
Plug fans, dehumidifiers, heaters, etc. into DSP-1 power outlets. Connect dimming cables from DSD-1 to light drivers (0-10V). Connect exhaust fans to DSC-1 speed control.
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Power On & Network Setup
Plug in the Hydro-X controller. Connect Ethernet or configure WiFi via the touchscreen menu. Download the TrolMaster app on your phone/tablet.
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Configure Zones
In the Hydro-X menu, define your zones (e.g., "Veg Room," "Flower Room 1," "Dry Room"). Assign sensors and devices to each zone.
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Set Target Parameters
For each zone, set your ideal targets: Temperature (e.g., 75-82°F), Humidity (50-60% veg, 40-50% flower), CO2 (1200-1500 PPM), VPD (0.8-1.2 kPa). The system will auto-adjust devices to hit these targets.
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Create Automation Rules
Build "if/then" logic: "If temp >85°F, turn exhaust fan to 100%." "If humidity <45%, turn humidifier on." "If lights off, reduce CO2 to 400 PPM."
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Program Schedules
Set daily light schedules (e.g., 18/6 veg, 12/12 flower). Schedule day/night temperature drops. Sync CO2 injection with lights-on periods.
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Test & Monitor
Run the system for 24-48 hours. Watch how it responds to environmental changes. Adjust min/max thresholds if devices are cycling too frequently.
🌡️ Sensor Types & Placement
Temperature Sensors:
Place at canopy level, out of direct light. One per zone minimum. For large rooms, add 1 sensor per 100 sq ft.
Humidity Sensors:
Co-located with temp sensors (usually on same MBS-S8 board). Keep away from direct mist/fog from humidifiers.
CO2 Sensors:
Mount at mid-canopy height (CO2 is heavier than air and settles). Avoid placing near exhaust fans or intakes (inaccurate readings).
Light Sensors (PAR):
Mount at canopy level, facing lights. Use to verify PPFD across zones or trigger sunrise/sunset routines.
Soil Moisture Sensors:
Insert probes 2-3 inches deep into substrate. Monitor EC and water content to trigger irrigation events.
Water Temp Probes:
Submerge in hydroponic reservoir. Critical for DWC, RDWC, NFT systems (ideal: 65-70°F).
🎛️ Device Control Capabilities
Exhaust Fans
Variable speed control (0-100%). Auto-adjust based on temp/humidity/CO2.
Grow Lights
Dim/brighten via 0-10V protocol. Sunrise/sunset dimming curves. Multi-zone schedules.
CO2 Systems
Auto-inject to maintain target PPM. Shuts off when lights are off or exhaust is running.
Dehumidifiers
On/off or speed control. Integrates with exhaust fans to maximize efficiency.
Heaters
On/off control. Prevents night-time temp drops. Works with exhaust fan logic.
Irrigation Pumps
Schedule-based or sensor-triggered. Pair with soil moisture sensors for precision.
Humidifiers
On/off control. Auto-activates when RH drops below target. Pairs with dehumidifier logic.
Circulation Fans
On/off or speed control. Run continuously or sync with light schedules.
📱 Programming & Automation
Schedules:
- Light on/off times (18/6, 12/12, custom)
- Day/night temperature transitions
- Irrigation cycles (e.g., 3x daily for 2 minutes)
- CO2 injection windows (lights-on only)
Automation Examples:
- High Temp Response: "If temp >85°F for 5 minutes, set exhaust fan to 100% and turn off CO2 until temp <82°F"
- Humidity Control: "If RH >65%, turn on dehumidifier and increase exhaust fan to 80%"
- VPD Optimization: "Maintain VPD 0.8-1.2 kPa by adjusting temp and humidity devices"
- Lights-Off Protocol: "When lights turn off, reduce exhaust fan to 30%, stop CO2, allow temp to drop 5°F"
- Irrigation Logic: "If soil moisture <20%, run pump for 90 seconds"
Remote Monitoring (App):
- View live data from all zones
- Receive push notifications for alerts (high temp, low CO2, etc.)
- Adjust targets and schedules remotely
- View historical data graphs (temp, humidity, VPD over time)
🚨 Common Setup Mistakes
❌ Sensor Placement Errors:
Placing temp sensors in direct light or near hot/cold spots gives false readings. Always place sensors at canopy level in shaded, representative locations.
❌ Overloading Power Circuits:
DSP-1 power stations are rated for 15A max. Don't plug in multiple high-draw devices (1500W+ heaters, dehumidifiers) on one station. Use dedicated circuits.
❌ Conflicting Automation Rules:
Example: "Turn on heater when temp <70°F" AND "Turn on exhaust fan 100% when temp >75°F" can cause devices to fight each other. Review logic for conflicts.
❌ Ignoring Min/Max Run Times:
Set minimum run times for compressor-based equipment (dehumidifiers, AC units) to prevent short-cycling, which damages compressors. Minimum 3-5 minutes between cycles.
❌ Not Testing Fail-Safes:
Always configure high-temp alerts (e.g., alert if temp >90°F). Test notification system to ensure you'll be alerted to emergencies.
💡 Pro Tip - Start Simple:
Don't try to automate everything on day one. Start with basic temp/humidity control, then add CO2, then irrigation, then advanced VPD optimization. Build complexity over weeks, not hours.
💡 Pro Tip - Backup Power:
Put the Hydro-X controller on a UPS (battery backup). If power flickers, you won't lose your configuration or network connection.
🔧 What It Is
The 76 is a multi-device smart controller with 4 independent AC outlets and built-in temp/humidity/VPD sensors. Control your exhaust fan, intake fan, heater, and humidifier/dehumidifier all from one unit. Program each device independently with custom triggers and schedules.
4 Controllable Outlets
Control up to 4 devices independently (1500W max per outlet)
VPD-Based Automation
Program devices to maintain target VPD (game-changer for dialing in climate)
Bluetooth App Control
Configure and monitor via smartphone app (UIS platform)
Transition Schedules
Automatically adjust targets for day/night cycles
⚙️ Setup Guide
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Unbox & Position
Mount the Controller 76 outside your tent (it has 4 outlets - you don't want this inside where humidity can damage electronics). Plug it into a wall outlet.
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Run Sensor Probe
The 76 has a 6-foot sensor cable. Feed it into your tent and hang at canopy level. This probe measures temp, humidity, and calculates VPD.
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Connect Devices
Plug your equipment into the 4 outlets on the Controller 76:
- Outlet 1: Exhaust fan (AC Infinity CloudLine)
- Outlet 2: Intake fan or circulation fan
- Outlet 3: Dehumidifier or humidifier
- Outlet 4: Heater or second fan
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Download AC Infinity App
Get the "AC Infinity" app (iOS/Android). Enable Bluetooth on your phone. Power on the 76 - it will show up in the app as a discoverable device. Pair it.
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Name Your Devices
In the app, label each outlet: "Exhaust Fan," "Intake," "Dehumidifier," "Heater." This makes programming easier.
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Set Control Mode for Each Device
Each outlet can be programmed independently:
- OFF: Device is off
- ON: Device runs at set speed/power continuously
- AUTO (Temp): Adjust based on temperature
- AUTO (Humidity): Adjust based on humidity
- AUTO (VPD): Adjust to maintain target VPD
- TIMER/CYCLE: Schedule-based control
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Program Exhaust Fan (Example)
Set Outlet 1 (Exhaust) to AUTO (VPD). Target VPD: 1.0 kPa. Min Speed: 2, Max Speed: 10. Fan will auto-adjust to keep VPD in range.
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Program Dehumidifier (Example)
Set Outlet 3 (Dehumidifier) to AUTO (Humidity). Target: 50%. Trigger: Turn ON if RH >52%, turn OFF if RH <48%. Works in tandem with exhaust fan.
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Create Day/Night Transition Schedule
In the app, set "Day" targets (lights on: 78°F, 55% RH, VPD 1.0) and "Night" targets (lights off: 70°F, 50% RH, VPD 0.8). Schedule transitions at your light on/off times.
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Monitor & Adjust
The app shows real-time temp, humidity, VPD readings. Review data over days and tweak targets as plants progress through growth stages.
🌡️ VPD-Based Control (Advanced)
The 76's VPD automation is a game-changer. Instead of controlling temp and humidity separately, you target VPD directly - the controller adjusts devices to maintain your ideal VPD range.
How It Works:
- Controller calculates VPD in real-time from temp/humidity sensor
- You set target VPD (e.g., 1.0 kPa for mid-veg, 1.2 kPa for late flower)
- Controller adjusts exhaust fan, heater, humidifier/dehumidifier to hit VPD target
- VPD optimization = better transpiration = faster growth
VPD Target Examples:
- Clones/Seedlings: 0.4-0.8 kPa (high humidity, gentle)
- Early Veg: 0.8-1.0 kPa
- Late Veg: 1.0-1.2 kPa
- Early Flower: 1.0-1.2 kPa
- Late Flower: 1.2-1.6 kPa (lower humidity = denser buds, less mold risk)
💡 Pro Tip - Start with Humidity First:
If you're new to VPD, start by controlling humidity (easier to understand). Once you're comfortable, switch to VPD mode for advanced optimization.
🔄 Transition Schedules (Day/Night)
The 76 allows you to program different targets for lights-on vs lights-off. This mimics natural day/night cycles and optimizes plant growth.
Example: Flower Tent Day/Night Setup
Day Schedule (Lights On - 12 hours):
- Target Temp: 78°F
- Target Humidity: 45%
- Target VPD: 1.2 kPa
- Exhaust Fan: AUTO (VPD), Min 3, Max 10
- Dehumidifier: AUTO (Humidity), ON if >47%
Night Schedule (Lights Off - 12 hours):
- Target Temp: 68°F (10°F drop for terpene production)
- Target Humidity: 50% (slightly higher OK at night)
- Target VPD: 0.8 kPa
- Exhaust Fan: AUTO (VPD), Min 1, Max 6 (lower speeds to retain heat)
- Dehumidifier: AUTO (Humidity), ON if >55%
💡 Pro Tip - Transition Timing:
Set transition schedules to match your light timer exactly. If lights turn off at 8 PM, set the night schedule to start at 8 PM. Perfect synchronization.
🚨 Common Mistakes
❌ Overloading Outlets:
Each outlet is rated for 15A (1500W max). A large dehumidifier + heater can exceed this. Check device wattage before plugging in. Spread high-draw devices across multiple outlets.
❌ Conflicting Device Logic:
Don't set exhaust fan to cool (auto-temp) AND dehumidifier to dry (auto-humidity) without coordination. If temp is high but humidity is low, you'll have devices fighting. VPD mode solves this.
❌ Not Testing Transitions:
After setting day/night schedules, manually advance the clock in the app to test the transition. Ensure devices respond correctly at the scheduled time.
💡 Pro Tip - Bluetooth Range:
The 76 uses Bluetooth (not WiFi). You need to be within 30 feet to connect. If you want remote monitoring, consider the Controller 79 (WiFi-enabled version).
📊 How to Read Temp/Humidity Graphs
Most monitoring systems (GrowLink, TrolMaster, WiFi sensors) log data over time and display it as line graphs. Here's how to interpret them:
Temperature Graph Analysis:
- Flat Line: Good! Stable temp means your climate control is working. Ideal: ±2°F variation throughout the day.
- Spikes (sudden jumps): Problem! Lights turning on/off, door opened, HVAC failed. Investigate the timestamp.
- Gradual Climb: Exhaust fan can't keep up with heat. Increase fan speed, add AC, or reduce light intensity.
- Gradual Drop: Too much cooling. Reduce exhaust fan speed during lights-off or add a heater.
- Sawtooth Pattern: Device cycling on/off too frequently (e.g., heater turning on/off every 5 minutes). Adjust min/max thresholds to reduce cycling.
Humidity Graph Analysis:
- Stable Flat Line: Perfect. Your dehumidifier/humidifier + exhaust are balanced.
- Spike at Lights-Off: Normal! Temp drops when lights turn off, causing RH to spike (same water vapor, cooler air = higher RH%). If spike is >15%, increase exhaust fan speed at night.
- Spike After Watering: Expected. Soil/substrate releases moisture. Should stabilize within 2-4 hours. If not, increase ventilation.
- Gradual Rise Over Days: Plants are getting bigger and transpiring more. Time to increase dehumidification or exhaust capacity.
- Sudden Drop to <30%: Something dried out the air (heater running, over-ventilation). Add humidifier or reduce exhaust fan speed.
VPD Graph Analysis (If Available):
- Stable in Target Range (0.8-1.2 kPa): Excellent. Plants are transpiring optimally.
- VPD Too Low (<0.6 kPa): High humidity, low transpiration. Risk of mold/mildew. Increase exhaust or dehumidify.
- VPD Too High (>1.6 kPa): Low humidity or high temp. Plants stressed, slow growth. Increase humidity or lower temp.
🔍 Identifying Problems from Data Patterns
Problem 1: Heat Spikes (Temp Jumps 10°F+ in Minutes)
Data Pattern: Sudden vertical spike on temp graph, then gradual decline.
Causes: Exhaust fan failed, AC died, ballast malfunction, door left open in hot weather.
Action: Check exhaust fan (is it running?), verify AC is working, inspect ballasts for overheating, ensure tent is closed.
Problem 2: Humidity Creep (RH Slowly Rising Over 3-5 Days)
Data Pattern: Humidity baseline increasing by 2-5% per day (e.g., Day 1: 50%, Day 3: 55%, Day 5: 60%).
Causes: Plants are bigger (more transpiration), dehumidifier not keeping up, reduced airflow.
Action: Increase exhaust fan baseline speed, run dehumidifier longer/stronger, add circulation fans, prune dense canopy areas.
Problem 3: Wild pH Swings (Hydro - pH Changing >1.0 per Day)
Data Pattern: pH graph looks like a rollercoaster - 5.8 → 6.5 → 5.5 → 6.8 in 48 hours.
Causes: Unbalanced nutrients, root problems (rot, pythium), algae growth, incorrect pH adjustment (adding too much pH up/down).
Action: Change reservoir, inspect roots (are they white/healthy?), clean system (kill algae), adjust nutrient ratios, use pH buffers (silica).
Problem 4: Temperature Drops at Lights-Off (Drops >15°F)
Data Pattern: Temp is 78°F during day, drops to 60°F at night.
Causes: No heater, exhaust fan running too fast at night, ambient room too cold.
Action: Add a space heater on a thermostat, reduce exhaust fan speed at night (use transition schedule), insulate tent.
Problem 5: EC Dropping Rapidly (Hydro - EC Down 0.5+ per Day)
Data Pattern: EC starts at 2.0, drops to 1.5 next day, then 1.0.
Causes: Plants are eating more than they're drinking (good problem!), under-feeding, water evaporation faster than nutrient uptake.
Action: Increase nutrient strength gradually (add 0.2 EC per reservoir change), top off with nutrient solution instead of plain water, check if you're in heavy-feeding stage (mid-flower).
Problem 6: Stable Temp but VPD Out of Range
Data Pattern: Temp is perfect (75-80°F), but VPD is 0.5 kPa (too low) or 1.8 kPa (too high).
Causes: Humidity is the issue, not temp. Low VPD = high humidity. High VPD = low humidity.
Action: For low VPD (high RH): increase dehumidification. For high VPD (low RH): add humidifier or reduce exhaust fan speed.
📉 VPD Trending & Adjustments
VPD (Vapor Pressure Deficit) is the single most important metric for optimizing plant transpiration and growth. If you're not tracking VPD, you're leaving yield on the table.
What VPD Tells You:
- Low VPD (<0.6 kPa): Plants aren't transpiring enough. Growth slows. Mold/mildew risk increases.
- Ideal VPD (0.8-1.2 kPa veg, 1.0-1.6 kPa flower): Optimal transpiration. Nutrient uptake maximized. Fast growth.
- High VPD (>1.6 kPa): Plants are stressed. Transpiring too fast. Leaves curl, growth slows, nutrient uptake impaired.
How to Adjust VPD:
To INCREASE VPD (if too low):
- Increase temperature (raises leaf surface temp)
- Decrease humidity (exhaust more air, run dehumidifier)
- Increase airflow (more air movement = better transpiration)
To DECREASE VPD (if too high):
- Decrease temperature (AC, reduce light intensity)
- Increase humidity (humidifier, reduce exhaust fan speed)
- Reduce airflow slightly (less stress on plants)
💡 Pro Tip - VPD by Growth Stage:
Don't use the same VPD target throughout the entire grow. Adjust by stage:
Clones/Seedlings: 0.4-0.8 kPa
Veg: 0.8-1.2 kPa
Early Flower: 1.0-1.2 kPa
Late Flower: 1.2-1.6 kPa (lower humidity = denser buds)
🚨 When Data Tells You Something is Wrong (Before Plants Show Symptoms)
This is where monitoring earns its keep. Here's how to catch problems BEFORE plants show visible stress:
Early Warning Sign 1: Temperature Climbing Slowly Over 2-3 Days
What it means: Your cooling capacity is maxed out. Plants are getting bigger (more heat), lights are aging (more heat), or ambient temps are rising (summer approaching).
Action NOW (before plants wilt): Increase exhaust fan to max speed, add an AC unit, reduce light intensity 10-20%, prune canopy to improve airflow.
Early Warning Sign 2: Humidity Spiking at Lights-Off (>70%)
What it means: Risk of mold/powdery mildew within days, especially in flower.
Action NOW (before mold appears): Increase exhaust fan at night, run dehumidifier 24/7, improve air circulation, prune dense areas.
Early Warning Sign 3: Water Temp Rising in Reservoir (>72°F)
What it means: Root rot (pythium) risk is escalating. Once roots turn brown/slimy, it's hard to recover.
Action NOW (before roots rot): Add frozen water bottles to res, install a water chiller, add beneficial bacteria (Hydroguard, Great White), increase dissolved oxygen (more air stones).
Early Warning Sign 4: EC Spiking in Reservoir (Rising 0.3+ EC per Day)
What it means: Plants are drinking more water than they're eating nutrients. Nutrient concentration is increasing. Nutrient burn incoming.
Action NOW (before leaf tips burn): Dilute reservoir with plain water, reduce nutrient strength for next change, increase reservoir size (more stable).
Early Warning Sign 5: pH Drifting Upward Every Day (5.8 → 6.2 → 6.6)
What it means: Plants are consuming more nitrates than ammonium (normal in veg). pH will naturally rise. But if it goes >6.8, nutrient lockout occurs.
Action NOW (before lockout): Adjust pH down daily back to 5.8. If pH swings are wild (>1.0 per day), check root health (rot?) and nutrient balance.
⚠️ The Golden Rule of Monitoring:
If your data shows a trend getting worse over 2-3 days, ACT NOW. Don't wait for visible plant symptoms. By the time leaves wilt or burn, you've lost days of growth and possibly your crop.
📚 Data-Driven Optimization
Once you've dialed in your environment, use historical data to optimize for maximum yield and quality.
Technique 1: Compare Successful Runs
After a great harvest, export your environmental data (GrowLink, TrolMaster). Review what temp, humidity, and VPD you maintained during flower. Replicate those exact conditions on your next run. Over time, you'll build a "recipe" for your specific strain.
Technique 2: Identify Yield Limiters
If yield was lower than expected, review the data for the entire grow. Did VPD drift too high during flower? Did temp spike during week 6? Did humidity stay too high during late flower? Pinpoint the environmental bottleneck and fix it next run.
Technique 3: Track Day/Night Differentials
Calculate the average day/night temp differential for each week of flower. Ideal: 10-15°F drop at night during late flower (weeks 6-9). This maximizes terpene production and trichome density. If your nights are too warm, yield suffers.
Technique 4: Log Nutrient Adjustments Alongside Environmental Data
Note when you change nutrient strength, pH adjust, or add supplements. Cross-reference with temp/humidity data. Example: "Added Bloom booster on Day 35. Humidity spiked from 45% to 55% within 24 hours." This reveals cause-and-effect relationships.
💡 Pro Tip - Keep a Grow Journal Alongside Monitoring Data:
Monitoring systems track numbers, but they don't track what YOU did. Keep a simple journal (app, notebook, spreadsheet) logging: nutrient changes, pruning dates, pest treatments, plant observations. When you review data later, you'll connect the dots between actions and results.
