Hi, we recently purchased some new LR today and an algae blenny. The two pieces of rock have green mushrooms on and polyps. Everything was fine for an hour or two but suddenly the file fish was lying on its side on the sand bed, the medusa coral has started to wilt right down and the mushrooms and polyps have closed up but extended out jnto stalk type things!! We had just tested all the water and everything was fine! We have had the tank three months now. It has plenty of liverock with loads of polyps and mushrooms and loads new ones sproting out everywhere. It has an external filter two power heads and a protein skimmer. We have had a file fish for about two months now and had been absolutly fine. We had a large piece of medusa coral which was doing fantastically. We added the two new pieces of rock with polyps on and algae blenny today. All was well. Tests showed salinity 1.026. Temp 81f calcium 420. Nitrate 0 nitrite 0 ammonia 0 and phosphate 0.3. Phosphate is a tad high but we have been using a phosphate remover to lower it. Also with the rock today came a small peppermint crab tucked under a mushroom. As i said everything was fine since 5pm when released until about half an hour ago and now the algae blenny has flopped on his side too. The water has also gone quite cloudy. Almost like it did when it went through its bacterial bloom a month ago. Please help!