I have a 29 gal FOWLR
tank that has been cycled for about 8 weeks. 6 weeks ago I added a Perc Clown, a Yellowtail Damsel, and a Royal Gramma. I monitored water quality daily. SG
has always been between 1.0230 and 1.235. Temp is between 79 and 81 Deg F.
There was concern that I added too many fish too fast, so I checked No3
daily for 4 weeks, and every few days since then. No3
has never been higher then 10 and is usually undetectable. (I change 10%-15% weekly)
10 days ago my Gramma went AWOL. He was fine and acting normal, and then one day.."Poof"...gone. I chalked it up to just one of those things...maybe he jumped out (although the top is tight fitting), maybe got trapped in the rock..who knows?
Then, today, my damsel was dead on the bottom. He was fine at 5:00 am and ate well last night. The Clown is doing well, and the Shrimp, Cucumber, and others appear to be doing well. I double checked water quality and everything is the same as it has been for 8 weeks.
Any ideas? I have another Gramma that I am supposed to pick up on Monday.