Tropic Marin Potassium 500ml

Tropic Marin Potassium is a concentrated potassium supplement for reef aquariums. Potassium is a vital macronutrient naturally present in seawater (≈ 408 mg/L). Over time — especially if you use zeolites, reactors, or other adsorption media — potassium levels can drop, which may lead to dull coral colours or retracted polyps. This supplement restores potassium to natural seawater levels and helps enhance coral vitality and coloration. About 15 ml per 150 L (≈ 40 US gal) raises potassium by roughly 10 ppm; daily dosing should not exceed 30 ml per 150 L.