High-purity, magnesium-rich mineral that may be employed in traditional calcium reactors, or even blended in to pre-existing aquarium substratum, to gradually increase and maintain the magnesium concentration in the...
Medical-use pinch valves for precise `dial-in` control of soft tubing. Can be used for Calcium Reactors and Kalkreaktor effluent drip control and any CO2 or O3 flow control. Since that valve is external to the tubing, they can nev...
Replacement set of Screws, washers and nuts for Korallin reactor lids.