Originally posted by jimi:
<STRONG>We definately need more info like exactly what you used how you did the change and your water readings now. Did you premix the water, use r/o or tap water?</STRONG>
Jimi - I used R/O water that was pre-mixed with salt using a pump. I checked the salinity of the water before adding it. It should've been just right. I also checked the temp with a thermometer and it was within 1 degree of the water already in the tank. When I saw there was a problem I also checked the pH, nitrites and ammonia levels and found no problems with these. My yellow tang originally acted like he was becoming sick (gasping for air, swimming vertically, etc.), but now he's acting a little better. The next thing I knew one of my angels was lying on his side. He's still alive, but just barely. I'm considering another partial water change just in case something strange got into the water system. I think I'll take the rock back out as well. We interchange the large rocks each time we do a water change because we sun bleach our rocks to clean them rather than chancing chlorine. Any ideas as to what might be happening? I don't want to lose all of my fish. Any suggestions would be helpful. By the way, I cleaned all of the filters as well.