On Wed I noticed all my corals not looking too great. I checked and everything was at 0. What I hadn't noticed was the evaporation in just 3 days time. SG was 1.027 or 028. I quickly added RO water to get it back down. Will this permanently damage soft corals? The hammer was almost completely withdrawn just before i did my weekly water change today...you could see the white spines. It appears to be coming back out slightly. I moved my blasto closer to a rock so it wasn't is too strong of water flow and when I accidentally touched one of them it felt like it had turned to rock. I now see that several of them have moved their mouths.