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Osmolator Nano 3152 Auto Top Off - Tunze
Tunze$114.99For small aquariums, a stable osmotic balance is important, because they are particularly sensitive to constantly changing salt concentrations. The Osmolator nano which was specifically designed for this, is a water level controller with only a... -
Replacement Osmolator Pump 5000.020 - Tunze
Tunze$29.99Replacement dosing pump with low voltage 3-12V DC for osmolator.Power with 4mm hose at 11V: 0.9m – 110/h, 1.4m – 80l/h, 1.8m – 58l/h, Hmax 3.6m. -
On Sale 21%
Duetto 2 Dual-Sensor ATO Aquarium Auto-Top-Off System - XP Aqua
XP Aqua$139.99$109.99With 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... -
HYDROS ATO Auto Top-Off Kit (Requires a Hydros Controller to Use)
Hydros$79.99Why purchase a separate and expensive auto top-off system when HYDROS can do the job for you? The HYDROS Auto Top-Off Kit comes with everything you need to use your HYDROS device (like the Control 2 or Control 4) as an ATO system... -
Prism ATO Auto Top Off - Reef Breeders
Reef Breeders$79.99The Reef Breeders Prism-ATO is designed to work with aquariums of all sizes, from pico desktops and All-in-One aquariums with limited space, to large reef tanks with full sumps. The Prism ATO has 3 sensors and registers your water level in a... -
Hydrofill Ti - ATO Mounted Return Bracket - Innovative Marine
Innovative Marine$22.99HydroFill Ti – Universal ATO Return Bracket The Universal ATO Return Bracket is the fastest and simplest way to complete your ATO return system. Simply position and anchor to your aquarium. The cell cast acrylic body and custom made... -
Hydrofill Ti - ATO Controller - Innovative Marine
Innovative Marine$76.99HydroFill Ti – ATO Controller Automate freshwater replenishment, and say farewell to heavy lifting, unstable water parameters, and the need to frequently watch your water line. Topping off evaporated water for our aquariums is a tedious but... -
EXO Auto Top Off ATO - Reef Breeders
Reef Breeders$99.99The Reef Breeders Exo-ATO (External ATO) is one of the first ATO systems to contain all electronics outside of your aquarium. The controller and sensor mount to the outside of the glass, and a small magnetic ring is inserted at your desired water level... -
Turbelle High Jet Replacement Osmolator Pump (3155 & 3152) 5000.021 - Tunze
Tunze$69.99The Turbelle® High Jet is a replacement dosing pump with safety extra low voltage 12 V DC for Osmolator® nano 3152 and Osmolator® 3155 and belongs to a new generation of centrifugal pumps with a high delivery height and small... -
Hydrofill Ti - ATO Water Pump - Innovative Marine
Innovative Marine$76.99HydroFill Ti - ATO Return Pump Pair your auto top off with the industry's first low voltage air lift pump specifically designed for ATO controllers. Engineered for high performance, this external positive displacement diaphragm pump, outputs up to 15... -
Smart ATO Nano Kit - AutoAqua
AutoAqua$109.99The Smart ATO Nano Kit is a plug-and-play auto top-off system made by Autoaqua. Specifically designed for nano and pico aquariums under 50 gallons, this ATO nano kit will automatically monitor and refill evaporated... -
ATO Solenoid Valve - Icecap
Icecap$23.00Solenoid valve to use with gravity fed water containers or with most RODI units. Replaces the stock fill pump of the IceCap ATO. Equipped with a 14.5ft cord for versatile and easy installation Hooks up with standard 1/4in ro tubing (not included)... -
Micro Aquarium Auto Top Off ATO - PNW Customs
PNW Custom$79.99The Micro Aquarium Auto Top Off is designed to fit in the Micro Reef-Ready Tank sump, Small-In-One Aquarium, and just about every other tank sizing up to 40 gallons. An Auto Top Off will significantly boost your tank's stability by keep your salinity... -
Desktop Gravity Fed ATO Cube & Peninsula - Red Sea
Red Sea$20.95Red Sea's ATO fits perfectly on the rear compartment of the Desktop Aquarium range to maintain a consistent water level in the sump area. This allows for quiet and consistent operation of the pump and skimmer Features of the Desktop ATO by Red... -
ATO EZ Automatic Top Off System - IceCap
Icecap$89.99Replenish Evaporated Water... with Confidence! The IceCap ATO EZ System is an easy-to-use pump and sensor combo that offers peace of mind when replenishing evaporated water to an aquarium. Its twin optical sensors extend the device’s...