600 Gram Reef Basis Potassium Dry by Continuum Aquatics
Reef•Basis Potassium is a high purity potassium in dry form, which is particularly useful in aquaria housing SPS corals. Potassium plays a vital role in the formation of aragonite, as well as the coloration of many corals. It will replace potassium lost to zeolite and resin filtration, contains no acetate, EDTA, or polygluconates and is much stonger than many competitor's products because it is made from anhydrous salts, not hydrated salts.
Proper control of mineral levels is imperative for the health and growth of corals and many other invertebrates. Continuum recommends that you maintain a calcium level of between 410 and 450 mg/L (ppm), an alkalinity level of 7 to 11 dKH (2.5 to 4 meq/L), a magnesium level of 1250 to 1350 mg/L (ppm), and a potassium level of 380 to 405 mg/L (ppm). Note: Aquarists keeping SPS corals should consider keeping alkalinity at 7 to no more than 9 dKH (2.5 to 3.21 meq/L).