Actually they temp needed to stop most strains from reproducing is over 86 F, also using to little salt means most of the parasites survive and you end up selecting for a salt resistant strain.
As long as you have no loaches or mormyrid, scaleless fish, or shrimp you could use Quick-cure, Rid-ich+, or Super Ich Cure.
As long as you have no loaches or mormyrid, scaleless fish, or shrimp you could use Quick-cure, Rid-ich+, or Super Ich Cure.