get the temps to 85 or just above if your fish will handle it, add some aquarium salt gradually if your fish will handle that too, you will need to do some research on the fish you have
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1 Albino Red Oscar
1 Red Tail Black Shark
1 Bristlenose Plec
1 Mega Clown Plec
i have found that plecos , loaches and catfish are not too fond of salt..i would certainly raise the heat ; but i would also seek out a medication that will treat ich without staining the water...
joey....go look in all of the shops in your area and see if any of them have any "Aquari Sol" left sitting around...if they do ; buy it all......same thing with "Lifebearer".....