- Joined
- Jan 21, 2016
- Messages
- 9
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I think it's diatom, I do have 8 snails that help keep my rocks clean. When I put in the crushed coral on top of the sand within 30 min the CC had algae/diatom all over it (brown in color). Yes I have the eshopps 100 skimmer and the aquaclear 110 hob filter


