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I'm so glad this issue came up. I have a 140 sw, was set up in June. I have had good coraline growth all over my tank, everything is turning purple.
BUT! in the last 2 weeks I have noticed some of the coraline spots are either turning brownish/green or have something on them. Do I have alge growing on the coraline? My alk. is 8.2 and cal. is 340. I have been adding, (B-Ionic) calcium and alkalinity system. This has only raised the cal. from 320 to 340. I thought it should be higher. Is this all normal?
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