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- Jul 3, 2019
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Hi R2R, I have a reefer 350. Mixed reef, not too much bioload and only 5 small fish. Plenty of CUC, crabs and snails. Recently started noticing hairy brown algae growing on plumbing, back wall and now on the rock. Tank is over a year old w good parameters. Salinity 1.025, pH 8.1, temp 78, Alk 8.1, Calc 430, Phos O using Hanna ULR test kit. Not running GFO now, just carbon, water changes about 10-15% every 3 weeks. Very disturbing. HELP...