Hanna Instruments HI98319 Salinity & Temperature Tester - Hanna $79.99 We are pleased to announce our NEW HI98319 waterproof salinity and temperature tester! Waterproof and floats! Includes 4x of the Salinity Calibration Fluid Packets. Automatic Calibration – A 35.00 ppt solution is used for calibration and... Add to Cart
Tunze Osmolator 3155 Auto Top Off - Tunze $229.99 High-tech, for a reliable water level in the aquarium. Water level regulator with two sensors suitable for use in cabinet filters, in Comline filters or directly on the edge of the aquarium. Scope of delivery: Ready for mounting with... Add to Cart
SAVE 22% Neptune Systems Apex ATK V2 Automatic Top-Off Kit ATO (ATK) - Neptune Systems $174.95 $224.95 $224.95 The ATK (Automatic Top-off Kit) is a simple, standalone, and complete solution for replacing water lost to evaporation. The new aquarium hobbyist has many challenges, but none is more annoying than the chore of adding water, every day, to make up for... Add to Cart
Tunze Osmolator Nano 3152 Auto Top Off - Tunze $114.99 For 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... Add to Cart
Icecap Dual Optical Auto Top Off (ATO) Controller - IceCap $139.69 An Auto Top Off (ATO) system is notably one of the most important pieces of equipment for a saltwater aquarium and simply a must have for any reef keeper. The IceCap ATO monitors and replenishes evaporated water eliminating the daily task of adding... Add to Cart
XP Aqua Complete ATO & Surface Skimmer for Sumpless Aquariums - XP Aqua $149.99 Sumpless ATO is the first and only ATO designed specifically for aquariums without sumps. The combination of the sleek overflow box and the innovative dual-optical sensor ATO will help to keep your aquarium topped off and your water crystal clear... Add to Cart
XP Aqua Duetto 2 Dual-Sensor ATO Aquarium Auto-Top-Off System - XP Aqua $139.99 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... Add to Cart