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Coraline Aquarium Gravel, 20 lbs.:
$50.37
Aquarium gravel with precise grading to permit free flow of nutrients and oxygen to nitrifying bacteria. Keeps water clear. Resists packing channeling and anaerobic dead spots beneath decor.
Aids in the growth of corals
Buffers for the life of the aquarium
Helps maintain a proper pH of 8.2 without constant chemical additions
Discourages nuisance algae growth
