With huge features jammed in a tiny package, the Duetto2 is the perfect ATO for your aquarium. XPAqua’s proprietary dual-optical sensor packs two precise level sensors in one incredibly small package. In addition to keeping your water level...

Peace at Mind Made Simple Featuring a Plug and Play design, Smart Level Security automatically detects the water level status when mounted. Magnetically-coupled sensor makes it easy to adjust to the desired level to secure your aquarium...

Automatic Shut-Off Float Kit w/ ASO Valve, Float Vae and 1/4in Fittings FEATURES: For use with RO and RODI System - Positive shut-off; completely shuts off all wastand product water Note: Auto Shut-Off Float Kit is not recommended for evaporation...

With 2 X dual-optical sensors, the Ultimate ATO is the first ATO to include 4 sensors. The 4 sensors allow us to design a dual-stage overfill alarm that is less intrusive as well as a run-dry protection feature that prevents your sump from running dry:...

SpectraPure® Piggy Back Kit with 90 GPD Standard RO Membrane -PBK-90