Requires a Hydros to Control the Unit The HYDROS Dosing Pump is a simple and affordable way to automate the addition of liquid supplements, trace elements, and two-part solutions to an aquarium. Connect the Dosing Pump to any available HYDROS Control...

Calcium hydroxide is used to prepare limewater (kalkwasser) solutions that will maintain calcium concentrations at natural seawater levels. Kalkwasser solutions maintain calcium directly and carbonate alkalinity indirectly. However, its capacity to...

The Control X10 offers a range of new advanced features, including multi-dosing heads and a salinity probe port (salinity probe sold separately), taking aquarium control to a whole new level. This highly versatile controller can...

The NEW KW Reactor is designed with the upflow principle to achieve the most efficient use of Kalkwasser.  By pushing top-off water upward through the calcium hydroxide, it automatically mixes it to achieve a supersaturated kalkwasser solution...

Calcium Supplement Mix. Our pure source of Calcium Hydroxide makes the ideal solution for replenishing calcium and maintaining alkalinity, for corals, clams, and calcareous algae that build skeletons of calcium carbonate. It also helps maintain pH,...

About HYDROS iV PRO Drive Port Accessory To obtain precise pH and conductivity readings, utilize the HYDROS iV Pro. This HYDROS Drive Port accessory is designed to isolate the test sample, preventing electrical interference from...

The IceCap Kalk Mixer is a dedicated reactor for dosing kalkwasser in a safe and controlled matter to supply equal additions of Calcium and Alkalinity to a Reef Aquarium. Kalkwasser dosing is considered one of the best all around methods to...

Rated for Aquariums up to 130 Gallons Footprint: 5.5" x 5.5" | Body Diameter: 4" | Height: 27.6"Requires control timer and feed pump Gently mixes your calcium hydroxide Reef Octopus Kalk Stirrer (Nilsen Reactor) carries a high torque low RPM motor...