I've been trying to raise my magnesium over the past few weeks and after adding some salifert magnesium powder today my Torch coral as fully retracted and doesn't look good. All my other corals are looking healthy infact some are actually looking better than normal. My test are currently nitrate: 2 phosphate: 0 sg currently 30ppt due to water from different lfs but trying to get this back up. alkalinity: 8dkh magnesium: 1290 calcium: 340 ph: 8 Could it just be due to the sudden increase in magnesium or could it be the increase in sg. Or is there any other problem.