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Ok. I have had a successful 75 gal reef tank for over 10 years. In the last 9 months green hair algae has taken over completely. Inverts and fish do not survive. Corals doing fine. A fair amount ambient light, but I have always had that. Protein skimmer gets overwhelmed by blocking the...

Greetings! I have never had nitrate problems in the many years I have had a 75G reef tank. However I am now thinking that with a new metal halide light and older live rock, that I might have a nitrate problem that is causing green algae growth that is bad and suppression of coralline algae...

Hello, I have a mature 75 gal reef tank with metal halide lighting. I have been keeping the glass top on my tank for years. The other day I started thinking that may not be the right approach. Should I keep or remove the glass top? Thanks!

Hello, I am a new member to the site. I have been keeping a reef tank for about 7 years or so and currently have a 75 gal reef tank with various corals, inverts, and fish. I occasionally have a question that I need some help with and thought that this might be a good forum. Looking forward...