Aqua Master C800 Pro Controller - Automatic pH & EC Dosing

Let the Aqua Master C800 Pro Controller Hold Your pH and EC for You

Please note: dosing pumps are sold separately, and the C800 Pro needs a reservoir or batch tank with circulation so each dose mixes in before it re-measures.

The Aqua Master C800 Pro is an automatic pH and EC controller. It measures pH, EC, PPM, TDS and temperature in your reservoir, then doses pH adjuster and up to five nutrients through Aqua Master C Series pumps whenever readings leave your target range. Run it from the colour touchscreen or the app, with push alerts and 12 months of history.

Why You Need It

pH and EC never sit still. Plants drink, nutrients get used and the tank drifts, so keeping it on target by hand means testing and topping up every day, and getting it right every time.

The C800 Pro does the boring bit for you on a simple loop: measure, dose, wait for it to mix, measure again. It keeps going until the reservoir is back on target, and stops dosing if anything trips an alarm.

Is the C800 Pro Right for Your Setup?

• Recirculating systems and batch tanks: anywhere the solution circulates and mixes.
• pH only, EC only or both: it runs as a combined controller or either one on its own.
• Static tank with no circulation? Doses won't mix, so readings will be off. Add circulation first.
• Just want eyes on your feed line? The W650 Pro Inline Monitor watches without dosing.

How the C800 Pro Works

The left output runs one pH pump, set to pH down or pH up. It corrects in one direction only, so pick the one your water needs. The right output runs one to five nutrient pumps. You set how long each pump runs per dose, from 1 to 900 seconds, and how long to wait before measuring again, from 0 to 60 minutes.

The maths is simple. At 1.5ml a second, a 10-second dose adds 15ml. Set the wait longer than your tank takes to mix, and the controller only ever measures a properly blended solution.

Key Benefits

• Automatic pH and EC: measures and doses without you lifting a jug.
• Up to six pumps: one pH pump plus up to five nutrient pumps.
• Safety stop: dosing stops while an alarm is active.
• Touchscreen and app: change settings on the unit or remotely over 2.4GHz Wi-Fi.
• Saved schedules: store dosing settings in the app and reuse them.
• 12 months of history: readings and alarms on screen and in the app.
• Flexible calibration: pH at 1, 2 or 3 points, EC at 1.4, 3.0 or 12.88, with adjustable reminders.

Contains

• 1 x C800 Pro controller
• 1 x pH electrode (BNC connector)
• 1 x EC electrode with built-in temperature sensor
• 1 x Power adapter and user manual

Not included: C Series dosing pumps and calibration solutions.

Which Pumps Do I Need?

• pH only: 1 x C10
• pH plus 1 nutrient: 2 x C10
• pH plus 2 nutrients: C10 + C20
• pH plus 3 nutrients: C10 + C30
• pH plus 4 nutrients: C10 + C30 + C10
• pH plus 5 nutrients: C10 + C30 + C20

C800 Pro Specifications

pH	0.00 to 14.00 pH, ±0.1 pH
EC	0.00 to 20.00 mS/cm, ±2% of full scale
PPM	0 to 14,000 (700 scale)
Temperature	0 to 50°C, ±1°C
Pump outputs	1 pH pump, 1 to 5 nutrient pumps
Dose time	1 to 900 seconds
Wait time	0 to 60 minutes
Control	Colour touchscreen and app, 2.4GHz Wi-Fi
Waterproof rating	Controller IP63, electrodes IP67
Size and weight	94 x 210 x 55mm, 656g
Warranty	2 years

How To Use the C800 Pro

1. Fit the electrodes: place both in the circulating reservoir and plug them into the controller.
2. Connect the pumps: pH pump to the left output, nutrient pumps to the right. Prime each line.
3. Calibrate: pH and EC, using the touchscreen or app.
4. Measure your mixing time: the manual shows you how. Set the wait time longer than it.
5. Set targets and alarms: enter your pH and EC targets, dose times and alarm limits, then let it run.

Top tip: Start with short doses and a long wait. Small doses that mix properly beat big ones that overshoot and send the controller chasing pH up and down all night.

FAQs

Can the C800 Pro raise and lower pH?
It runs one pH pump, set to either pH down or pH up, so it corrects in one direction. Choose the direction your water usually needs.

Does it work without Wi-Fi?
Yes. Everything runs from the touchscreen. Wi-Fi adds remote control, push alerts and saved schedules.

How much does each dose add?
C Series pumps deliver about 1.5ml a second, so 10 seconds adds about 15ml. Thick nutrients pump slower, so time a test run with yours.

Need help choosing? Call our growing experts on 01782 749955 or visit One Stop Grow Shop Stoke at Fenton Trade Park.

Set your targets once and let the controller do the daily graft. Browse our full range of pH and EC control.