I have a 46g tank with 1 pleco about 10 inches long, a parrot fish about 8 inches long, an african cichlid about 6 inches, a 4 inch peacock cichlid, and 2 baby oscars. Now to the emergency. I thought i had ich in my tank so i bought ich attack ( it's organic). I was treating the tank and was told after i was alrready a week into it that i should raise my temp to about 82. I raised it to about 80 and added salt. After i did that my parrot went to the bottom and isn't really eating. And also since then my pleco has developed an open sore. Now today it looks like my oscars have this fungus looking stuff on them. Also right after i added the salt it looked like a cory cat that i had developed fin rot. So i put him in my hospital tank and he died that night. My readings are from strips about 90 nitrate, 0 nitrite, 0 ammonia very hard water 0 chlorine, 60 alk, and 7.2 ph. i tried one dose of amquel 2 to no real avail. so the next day i tried a dose of tetra nitraban that got my nitrate down to 90 from 160. i did about a 50% water change. Fish don't seem any better. Actually worse!!!! I put the charcoal filter back in tonight and posted on here. So i could start over and I lowered the temp to 76. So it all up to you guys to save my fish please help.