Please help with Ich, first time and I cant get temp to 86
So I have ich. It started with my gold fish and she died, I think she was sick to begin with and the ich did her in, so this weird slimy white stuff was in one of her gills and that was that. Then I saw the white specs on my giant danio and my red wag tail. I tried to raise the temp to 86 but I couldn't get there. I have a 30g with a 200w heater. So I kept it at 82 (max temp) and removed the carbon in the filter and started the Aqueon Ich treatment, but I ran out after 2 applications and the store didn't have any more, so I switched to tetra ich tabs. Tetra says no need to raise the temp, so back down to 72. I have been through two boxes of the tetra ich guard and i still got ich. My bala shark is not doing good at all. He is covered in white spots siting in the corner and now it looks like his rear fin, top and bottom is dissapearing, which now I think he has fin rot also.
What do I need to do? Should I stop all the meds and just get another heater and do the heat method? Would ich make his fin disappear?
30g, 200w heater. air stone, Aqueaon 30 filter, water tested 0,0,5
1 giant danio
4 neon tetras
1 rainbow shark
1 red wag tail
1 bala shark
2 glow fish