- Joined
- Dec 26, 2021
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- 107
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I need help trying to figure out how to deal with this brown mat and brown hair algae that is preventing my coral polyps from opening up. It’s smothering them. I have directed wavemakers at it, brushed it with a soft brush, pulled out by hand the hair algae. It’s the mat that seems to be laying on top that I can’t remove. Would taking the rock out and dipping it in Coral RX help? It’s not Cyanobacteria and it’s no where else in my 75 gallon on other then a large additional rock with GSP on it. Nitrates are 5ppm phosphate is 0.03. All corals are doing just fine except for these covered rocks. Thanks for your input with this.