The active oxygen block will dissolve slowly in water and release ingredients that will help maintain a healthy environment for your fish. As the block dissolves it will replenish the oxygen supply. Replace the block with a new one when it has almost dissolved. This product will also help stabilize pH.
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I told them that I want the most amazing tank that they have ever built and would you believe it? Thats what I got! My huge reef tank has it all and I love it! I am sure that only Majestic Aquariums could have pulled this off. - Peter Halloran