FS AquaMaxx Nano Calcium Reactor 5 pound co2 bottle Needle Valve &
 

AquaMaxx Nano Star Calcium Reactors use an up-flow design to mix saltwater, calcium carbonate and CO2 inside a reaction chamber to eliminate the need for daily two-part dosing. Not only will the AquaMaxx Nano Calcium Reactor keep your levels balanced, you will no longer have to calculate daily dosages for your tank. With a seamless body, removable lid for quick media access and a small, space-saving design, the AquaMaxx Nano Calcium Reactor is truly one-of-a-kind the Nano Star is rated for aquariums up to 75 gallon.

Iv had it for a year and a half comes with a Aluminum - 5 Pound and a Milwaukee CO2 Regulator with Needle Valve & Solenoid and Caribsea A.R.M. Fine Calcium Reactor Media - 8-10 lbs. still lots left. Used for a saltwater aquarium

Selling all for $350 obo