I have a 55gal with 3 fish, they are about 1 1/2 yrs old. Volitan Lion Fish, Dogface Puffer and Panther Grouper. We got the tank (bought from someone about a month ago, bought the water/rock/substrate/filters etc so I don't think that caused any problems) and the fish have been doing well. The grouper hides out in a little rock cave most of the time, kind of clinging to the rock in an attempt (I assume) to camoflague himself when the lights are on, and then is more active when the lights are out. He has been eating regularly (they all have thankfully). Then all of a sudden 2 days have gone by and the grouper is just laying on it's side at the bottom on the gravel, not in his usual cave. It scared me when I first saw him because I thought he was dead, but he doesn't seem to be in distress, he will get up and swim around every once in a while, and last night when the light was off, he was swimming at the top of the tank against the current and splashed water out on the floor twice. Other than the behaviour I described, only thing I've noticed is that he hasn't eaten at the past two feedings, but he has skipped a meal or two in the past. One other thing, I did notice some scrapes on his sides about 2 weeks ago, very minor but I assumed he scraped himself on the rock since he always shoots down into that cave and clings against the wall. They seem to be healing up and I put stresscoat in the tank.
The tank temp is 78F, PH
8.0, Nitrite .25, Nitrate 50-75, Ammonia .025. Salt is reading a little high at 1.025. The only thing that I can see that has changed is the growth of green algae on the rocks and gravel, but I asked about it at the LFS
and the guy said that was no problem.
Although probably unrelated, I got a shocker this morning when my puffer suddenly infated for no apparent reason. I have never seen him inflate, and I freaked out because he was almost the size of a volleyball! But he quickly deflated (in like 60-90 seconds) and appears fine now, so I think something must have just spooked him.
Any suggestions would be appreciated, my fiance is driving me crazy with worry!