My zebra is doing fine.........still can't figure it out. Yeah, I did find some pockets of gas-no wonder my clown died---gee,I thought I was going too.

Doctorzeb--I think I have to agree with the gas bubble thing. The substrate is a mix of different sizes of gravs---but its about 2 to 4 inches deep. I do have heating cables in the tank--maybe some places are not getting covered well. I'll need to do some probing around to get that taken care of ...

PH 7.0 Nitrites 0 Nitrates trace amounts. Have Eheim canister filter-- I clean it twice a month--well change the filter pads as the handbook tells me.
The tank is a 90 gal fully planted--have flo powercompacts 10,000,5000 daylights and actinic for the colors on the fish--really brings out the pretty ...

I want to add picture to my post--how can I do this?

He has been acting different---staying on his side--and has gold slime coming off the top of his head. What is going on with him?
I've had this fish for over 8 years--never had a problem--until now.