Hi there, Would be very happy if someone can help me out with my barb! I've got 7 and I noticed(yesterday after work) the one big one is swimming very erratic. It's body is almost curled in a 'S' and it's swimming into everything... So far it seems like only the 1 is affected. Right, a quick history of what happened the last couple of days, actually everything happened on Sunday: - I did a 10% water change on Sunday(3 foot tank, +/- 80 liter). - Cleaned the AquaClear HOB filter in the water I took out of the tank. - Made some home made filter cartridges(using a pair of stockings) with that white ammonia remove stuff(can't remember what you call it). - Fed them with frozen dapnia that I bought Sunday afternoon. I just chuck half a cube into the water and after they finished that the other half. I read somewhere that it's not good giving them the frozen piece? Haven't had problems with the frozen bloodworms... - Nitrate is a bit high...just under 50 ppm but I think the water in Centurion will actually make it worse with a 50% water change.(I have a plants in the tank and don't overfeed, actually I tend to underfeed and skip a day once a week...) Remedies last night: - Added Tetra Easy Balance...suppose to bring down the nitrate and phosphate. - Added general bacterial/fungicide medicine. This morning it's still alive but not much improvement... Any help would be appreciated very much!