710delta
New Member
I have a 29 gallon tank with 2 damsels, 18 blue legs, 1 cleaner and 1 brittle star. I decided to try quickcrete in my tank on Monday but it didn't seem to work very well. During this time I put my fish, rock, crabs, shrimp and brittle star in an old tank with a heater and powerhead. The Quickcrete sand wasn't working very well so I decided to remove it and put my old substrate back in. The fish, shrimp and crabs as transitioned well but the brittle star began to secrete a milky substance along with the tips of his arms breaking off. I checked all of my levels before adding my fish and inverts back in but for some reason the brittle is having a problem. Any help will be useful. Ph 8.2, nitrites 0, nitrates 5ppm, ammonia 0.