How to Set Up a Smart Aquarium Controller
By Ferplast U.K. | Published: 2026-10-19
Category: How-to Guides
Learn how to set up a smart aquarium controller step by step, including tips for water level and wave controllers to automate your tank.
Quick answer
Set up your smart aquarium controller by first installing the water level controller (like Hydor SMART LEVEL) to maintain stable water levels, then adding a wave controller (like Hydor SMART WAVE) to create natural currents.
Why automate your aquarium?
Manual water top-offs and pump adjustments take time and are easy to forget. A smart controller handles these tasks automatically, keeping your tank stable and your fish healthy.
Step-by-step setup
- 1. Install the water level controller: Mount the Hydor SMART LEVEL sensor in your sump or tank where the water level changes most. Connect the controller to a water source (e.g., RO/DI reservoir) and set the desired water level. Plug the controller into power. Common mistake: placing the sensor where it may be blocked by decor or algae. Keep the sensor clean and unobstructed.
- 2. Program the water level controller: Adjust the sensitivity and on/off delays according to your tank's evaporation rate. For most tanks, a 1-2 minute delay prevents short cycling. Check that the water source valve is fully open; a partially closed valve can cause the controller to run longer than needed.
- 3. Install the wave controller: Place the Hydor SMART WAVE inside the aquarium cabinet, away from moisture if possible. Connect one or more pumps to the controller's outputs. Ensure pumps are compatible with the controller's voltage and current ratings. Common mistake: positioning the controller where it can get wet. Keep it dry to avoid electrical issues.
- 4. Program the wave controller: Choose between the two movement programs (e.g., alternating or random flow) and set the exchange time. For a reef tank, start with 10-30 second intervals. Use the feeding program to pause pumps during feeding. Start with longer intervals and observe your fish. If they seem stressed, reduce the intensity or change the program.
- 5. Test and adjust: Let both controllers run for 24 hours. Check that the water level stays within the desired range and that the wave pattern doesn't create dead spots or excessive surface agitation. If the water level drops too fast, your top-off line may be too small or the controller delay too short. Adjust accordingly.
Products that help
- SMART LEVEL: Hydor SMART LEVEL is a fully electronic water level controller that handles aquarium and sump water levels lost to evaporation. It reduces problems related to lime scale deposits and bacterial film. This means you don't have to manually top off your tank daily, and it helps keep water chemistry stable for both marine and freshwater setups.

SMART LEVEL - SMART WAVE: Hydor SMART WAVE controls one or more pumps with two movement programs and exchange times from 5 seconds to 6 hours, plus two feeding programs. It works with most compatible movement pumps. You can simulate natural water currents without buying a specialized pump system, and the feeding programs pause flow during feeding to reduce stress on fish.

SMART WAVE

