hello, i just found this site, i have learned alot already. this site is great. i had a 29 gal with 2 silver graumi's, 2 tiger barbs, 1 tin foil barb, 2blood fine tetras. had all of then at the least a year. recently bought a 55 gal set it up added the anglefish and silver dollar that can with it, then later add my fish to it, now i lost all of them, so i have lots of questions. i hope some one can answet.