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Xenia and Coral Bleaching?

April 26, 2017bleaching coral xenia

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Xenia and Coral Bleaching?

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Hi Crew, My Xenia has been doing great since I got it 4 months ago. Just today when I came home from work I noticed a huge part of the Xenia was bleached white! In the morning everything looked great so this just happened over the last couple of hours. It looks like it started at the base of the stalk and worked it’s way towards the arms. Arms have been falling off at the base since then and they are still pumping!. My water parameters are: Nitrates ~20, pH 8.2 a.m.-8.3 p.m. and Alkalinity of 9. I recently had extremely high nitrates for around 2 weeks (>100!) because of a massive die off of Mexican turbo snails (30 of them) because of temperature, and I couldn’t find them all ( my tank is ~700gal.) I’ve gotten the nitrates down with 25% water changes every 3 days and my temp is holding steady at 81 degrees. Is this Coral Bleaching or some sort of pathogen?