Hi all its being a while.A quick question about discus.I recently bought some juveniles from my lfs had them about 1wk and they were doin fine so i decided 2 buy a couple more.That nite i noticed 1 of them didnt look the best.His skin was goin kinda pale white,his overall colour was really dark and his eyes were really dull,long and behold i took him out dead within 2 days.This repeated with another 1 and its starting 2 spread 2 my other discus.Im just finishing a course of eSHa HEXAMITA which doesnt seem 2 hav worked 2 well has any1 any ideas.ph7 no ammonia tiny bit of nitrites and nitrates and kh 4-5 please i need help:help2: