Rainbow shark...discus...

Major didn't you just have a no2 problem in your tank? I think you should leave the tank alone for a while before you add more fish. My discus are still adjusting so I assume yours are too, no need to lose a discus because you want to add a fish that is already existing in a tank.
 
Jason i wasnt going to add fish for a while yet, at least another week till i sort this out, dont worry i know :)
 
I have a 2.5" albino rainbow shark in a 30g along with glowlights neons and a few other asst. community dwellers. He has never given me any trouble, and is always the best behaved :) . Like many have said, he will most likely be just fine. Good Luck!
 
AquariaCentral.com