Thanks for the responses, my other inhabitants are bank in the tank and seem fine. I only have 3 green chromis in there since the gramma is gone. The tank is only 40 gallons so I had planned on only adding 2 clownfish after I got back from vacation and then I would have been filled to capacity I figured. I have no idea what killed the gramma then. I did have a snail die during the night and I think he may have feasted on him. Maybe he got something from that snail that did him in? My parameters have been steady much to my chagrin. I posted a couple of weeks ago for advice on how to get my nitrates down, they have been steady at 20ppm. I started the process of switching out my crushed coral for PFS the afternoon after the gramma died. I took 1/4 of the coral out and when I tested my nitrates the following morning, they were down to 10. I was so excited. However, I tested them again yesterday, one day later and they were back up to 20 again. Hopefully once I get all the coral out of there it will solve that problem. My ammonia and nitrites are 0 and have been since i cycled 3 -4 months ago. My phospates are holding at .05. Hoping they will go down once the coral is out as well. My calcium can't seem to get above 400 (using Red Sea coral pro salt and RO
water), My SG
is 1.024 and my temp is 83. My ph is stuck at 7.8 and I'd like to get that up but I don't want to start adding chemicals if I can help it. I just take a long time to acclimate new fish and that gramma was with me for 3 1/2 weeks before she died. I'm thinking my KH
is a bit high? It has been at 196. 9. I do twice weekly water changes of 15% each time and have been for the last 4 weeks to try to get these nitrates down. It doesn't work. And I have tested my WC
water and that tests at 0 for nitrates and phosphates. I have a HOB
Remora and I have 2 powerheads and a canister filter that I also run for water movement. Nothing in the canister at this time although I had run a little bit of carbon in there previously. Anything that stands out that could have caused the gramma's early demise? I don't have much on my live rock at this point, I had to really cut back on my lighting to fight some algae a couple of weeks ago but I'm bringing that back up to 7 or 8 hours a day at this point. I do wonder at times about this live rock - some areas look bleached out and have no growth on them at all. It is mostly the same type of rock mostly Fiji I think. Some is starting to get some color but a couple of chunks are looking bleached and have had a couple of little pieces break off. Almost looks dried out?? And these are pieces on the bottom, not up near the lights. Is that normal??
Thanks again all!