Thread: Is it necissary to always flood rockwool 1" cubes?
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Old 11-17-2007, 01:31 AM
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The rockwool cube should be surrounded by growrocks, including a layer on top, and that keeps the cube wet and algae from growing on top. Rockwool should never be allowed to dry out. You can flood rockwool completely several times a day with no worries, as long as it doesn't sit in pooled water. If it is allowed to drain, it will hold a lot of water, while providing ample air.

That's why we use it.

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