Seachem Red Flourite. 7 kg (15.4 lbs.) is a specially fracted, iron rich, stable porous clay gravel for the natural planted aquarium. Although it may be mixed with other gravels, Fluorite is best used as the sole substrate bed. Any mixture should be at least half Fluorite. Gravel modifiers are not necessary. Fluorite is not chemically coated or treated and will not alter the pH of the water. Each 7kg (15.4lbs) is sufficient for about a 2 inch bed in a typical 10 gallon tank. Recommended use is 1 kg for every 200cm^2 (31in.^2) of tank bottom.

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