- Joined
- Feb 21, 2018
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I have been having the similar issue with my tank for almost 3 months since it was 3-4 months after set up. It could be a bacteria infection such as Vibrio. The corals infected by this bad bacteria exhibits the symptoms such as paling, poor polyp extension, tissue recession and eventually STN/RTN. Softies and LPS close up too. Mine seems to have started because of carbon source overdose when the tank has not reached the stage where bacterial population is balanced. Vibrio exists in all tanks and usually the ordinary aerobic and anaerobic bacteria are dominating and suppressing Vibrio activity. In case of young and immature tank, good bacteria has not been established enough and vibrio outbreak can occur with excessive carbon source dosing. What I have done is to stop NO3PO4-X completely and dose Seachem's Stability and Pristine to replenish good bacteria while keeping all other parameters stable and feed corals with amino, vitamin and Reefroid. I also supplement iodine to keep up coral's immune system. Bacterial balance can't be tested and your parameter are all in good range so this could be the cause of issue. Mine started to settle but as vibrio reproduces much faster rate than aerobic/anaerobic bacteria, carbon dosing will make it worse. Unless doing complete reset, it could be a long shot until vibrio gets suppressed by other good bacteria.