Collection: Dosing & Auto Top Off

Two Jobs, Both Automated

A reef tank loses fresh water to evaporation every day, which drives salinity up, and its corals steadily consume calcium, alkalinity, and magnesium. Auto top-off (ATO) handles the first by replacing evaporated water automatically; dosing pumps handle the second by delivering supplements on a set schedule. Together they take the two most tedious daily tasks off your hands. We carry gear from EcoTech, Bubble Magus, IceCap, Kamoer, and AutoAqua.

What You'll Find Here

• ATO systems — sensor-controlled pumps that top off evaporated water and hold salinity steady.
• Dosing pumps — single and multi-head peristaltic pumps for precise supplement dosing.
• Reservoirs — top-off and dosing containers to feed both systems.
• Auto water changers — automated systems that swap out old water for new.
• Tubing & accessories — dosing tube, holders, and anti-siphon valves.

An ATO is the single best safeguard against a salinity swing while you're away. Pair a dosing pump with a good test routine so you're replacing exactly what your corals use. Email info@jlaquatics.com to match a system to your tank. J&L has equipped Canadian reefkeepers since 1997.