Top 10 Osmolators for saltwater aquarium in 2026

Small water pump for the Auto Aqua Smart ATO or other device with 12 volt pump.

Red Sea 's ReefATO+ 3 in 1 is not only a connected osmolator, it is also equipped with a temperature sensor and a leak detector.

Red Sea 's ReefATO+ upgrade Kit is not only a connected osmolator, it is also equipped with a temperature sensor and a leak detector.

This upgrade Kit can only be used on Reefer aquariums, it is sold without a leak detector and without a magnetic support.

DC solenoid valve for reverse osmosis or Smart ASOV from Auto Aqua .

Auto Aqua 's Smart ATO Duo is a unique automatic osmolation system with two non-contact digital sensors that monitor and automate the refilling of evaporated water.

Auto Aqua - Smart ATO RO G2, reliable and ultra-secure automatic RO filling

The Auto Aqua - Smart ATO RO G2 is a solution designed to automate the filling of a reverse osmosis (RO) or RO/DI water reservoir without stress or constant monitoring. Compact, clever, and truly practical for everyday use, it prevents forgetting to shut off the RO system, resulting in smoother operation and a significantly reduced risk of flooding. Thanks to its dual optical sensors , solenoid valve , float valve kit , and integrated safety features, it effectively protects against overfilling. It also helps limit TDS creep by promoting longer cycles, contributing to cleaner aquarium water while preserving the resin. A truly convenient solution for keeping RO water always available.

• Automates the filling of the RO reservoir without forgetting to stop the system.
• Dual safety features with optical sensors, integrated timer and float valve.
• Helps limit TDS creep and preserve water quality.