i think i may have really disturbed my fish by changing the water while my temp was increased to clear ich-- I have a really sick female that has been so for weeks and has not eaten, a male platy that is super skinny and has stopped eating, another high fin (my fave dragonfly

) with the cualiflower from another tertra starting on her fin, oh it's stressingme out-- should i have not been changing the water as it was most likely cooler than the tank temp??

even more are falling ill now-- (just after today's water change and day 1 treatmet of melafix) one of my phantoms is swimming like she has swim baldder-- all upside down and sideways

i'm so concerned and getting frustrated-- do i have too many fish in the tank?? and why would my fry be the healthiest fish in the tank?? is there anything else anybody thinks i can do?? here i was thinking i was doing a good thing with the water changes... my water parameters are good-- 6.8 PH --nitrate 20 -- nitrite 0 -- KH 120

lila