Coral Colours and Amino Acids

[Ron99]

Well, after some more time and trying to keep ALK more stable I am fairly certain it was a voltage leak issue. After a bit of reading at RC I figured less than one volt shouldn't be a problem as many people seemed to have several volts with no ill effects. While my multimeter only showed less than one volt I don't think it was reading correctly. The other day I put my hand in the tank with a cut on my finger and felt a strong buzz in the cut. So there was obviously more voltage then I read. So a new heater and a ground probe later no more buzzing in the cut and some positive signs in the corals. The zoas seem to be opening a bit more where before they were melting and the sps that was in serious decline is now showing a bit of PE for the first time in weeks.

So it looks like voltage was the problem. Something to think about for those having issues with no other obvious water quality issues etc.