ANS Auto Top Up Float Valve

Description

Float valve can maintain proper aquarium water level and automatically add water. It is suitable for the 5 to 12mm thickness of aquarium.

Can be used for tank up to 12mm
Equipped with 6mm pipe connector, easy to install
Fresh and marine can use
Material : Acrylic

ANS Auto Top-Up Float Valve for Aquariums

This acrylic float valve automatically maintains your aquarium water level by opening a feed line whenever the level drops, so evaporation is topped up without you watching the tank. It clips onto rims from 5mm up to 12mm thick and connects to a standard 6mm pipe, making installation straightforward on most tanks. Suitable for freshwater and marine setups, it is a simple, no-electronics way to hold a steady level, which keeps overflow weirs and filter intakes running consistently.

Auto top-off is genuinely valuable in Singapore, because our warm 27-29C tanks and dry air-conditioned rooms drive noticeable daily evaporation, especially on open-top aquascapes and IOS-style tanks. A steady level matters even more for marine keepers, since topping up replaces only the evaporated freshwater and keeps salinity stable rather than letting it creep up. Feed the valve from a dechlorinated, parameter-matched reservoir, and check the float occasionally for biofilm or sticking, since a stuck-open valve can overfill a tank.

Find top-off parts and maintenance gear in our cleaning and maintenance range. To set it up safely, see our auto top-off setup guide and our marine-specific marine ATO guide.