Automatic Water-Level Control for Freshwater & Reef Tanks
Maintain a more consistent aquarium water level with the FZONE Auto Top-Off System. Dual optical sensors monitor evaporation and activate the included refill pump when additional water is needed.
Available Colors: Green and Blue. Select your preferred color before adding the system to your cart.
Key Benefits
Dual Optical Sensors: Monitor high and low water levels for precise automatic refilling.
Three-Layer Control Technology: EFTT, AFT and QST 2.0 help manage fill time, reduce unnecessary pump cycling and detect potential operating issues.
Automatic Safety Shutoff: Stops the pump and provides a visual alert when abnormal filling, an empty reservoir or a malfunction is detected.
Compact Installation: The slim sensor fits many rimmed, rimless, nano, medium and sump aquarium setups.
Freshwater & Saltwater Use: Helps replace water lost through evaporation in freshwater, marine and reef aquariums.
What’s Included
ATO controller, DC refill pump, universal tube holder, water check valve, power adapter, 6.5-foot PU tubing and user manual.
Product Details
Colors: Green or Blue
Pump flow rate: Up to 74 GPH (approximately 270–280 LPH)
Maximum pump lift: 6.56 feet (2 meters)
Power: AC 100–240V input; DC 12V/1A output
Magnetic mounting supports aquarium walls up to 0.78 inch (20 mm) thick
Important: Follow the included setup and calibration instructions carefully. Position the refill tube above the aquarium’s maximum water level and install the check valve in the correct direction to reduce backflow and siphoning risk. Regularly inspect and clean the sensors, pump and tubing. No automatic top-off system eliminates the need for routine aquarium monitoring.
Choose Green or Blue and make daily aquarium water-level maintenance easier.
Wags & Whiskers Pet Supply — Where Every Pet Is Family.
Feeding & Diet
An opportunistic omnivore, the Seahorse will scavenge detritus, uneaten food, and algae — making it a natural cleanup crew member. Supplement with small meaty foods like mysis shrimp or pellets 2–3x per week if natural food sources are limited.
Care & Water Parameters
The Seahorse thrives in stable, well-maintained reef conditions. Target parameters: temperature 72–78°F, salinity 1.025–1.026 SG, pH 8.1–8.4, and alkalinity 8–12 dKH. A mature, established tank of at least 20 gallons is recommended.
Reef & Tank Compatibility
Generally considered reef-safe. The Seahorse coexists well with most corals and peaceful fish. Use caution with very small invertebrates or slow-moving tankmates. Provide ample rockwork and hiding spots to reduce territorial behavior.
Size & Growth
Seahorses are typically shipped at 0.5–1.5 inches. They are slow-growing and generally remain small, making them well-suited for nano and mid-size reef systems.
Shipping & Live Arrival Guarantee
All livestock ships with heat or cold packs as needed and is packaged for safe transit. We stand behind a live arrival guarantee — if your animal arrives DOA, contact us within 2 hours of delivery with a clear photo. See our full DOA policy for claim details.
