40 cylinders so many parents the water in the cylinder is green the water should be good reduce the

　　40 cylinders so many parents the water in the cylinder is green the water should be good reduce the density will the fish state will be better？Three cylinders no40 cylinders so many parents, the water in the cylinder is green, the water should be good, reduce the density, will the fish state will be better?Three cylinders, dont want to add cylinders, I have been wanted to have a system cylinder for two years.Come on.

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