How much FORMALIN for treating goldish with ich ?
Some of the best treatments historically for Ich have been formalin or malachite green, or a combination of the two. Copper, methylene blue, and baths of potassium permanganate, quinine hydrochloride, and sodium chloride have also been used but do not appear to offer an advantage over the more readily available formalin and malachite green products. When using formalin, make sure to use recently purchased formalin. Formalin that is stored for long periods of time can convert to paraformaldehyde, which can be toxic to fish. An indicator that this has occurred is the formation of a white precipitate in the bottle. Malachite green may also stain some decorations and silicone to a green color and may be toxic to other scaleless fishes in your tank, if given at the recommended dose. For these fish or other sensitive species including goldfish, they should be treated at half strength and monitored carefully for signs of distress. I suggest you to use Melafix treatment, its much safe for all
