I'm new to the site and hoping for some good advice. I've had my 55 gal
tank set up for a few weeks now and in the last few have had horrible ammonia problems (Tiger barbs, turquoise gourami, black ghost knife, 4 line cat all died) but my three parrot fish seem to be coming back, and my others (Golden gourami, electric blue johanni, zebra cichlid, pleco, and blue lobster) weren't really affected by the whole ordeal at all. My levels have since gone down and I think I'm over the hump.
Seems the problem I'm having now is there's some strange white buildup on the interior walls of all four side on my tank, and I haven't a clue what it is. The tank has an air pump, filter, heater, the whole deal, but I don't know what's causing this. We do have hard water where I live and I also have live plants in the tank. Don't know if this info helps at all but I just want to make sure this isn't too big a problem so I can get life back to normal for my fish.
Any and all help is greatly appreciated. Thank you.