COMMON NAME(S): Fish louse

SYMPTOMS: The flat, somewhat rounded parasites can be seen crawling over the skin of the infected fish.

ORGANISM: Parasitic crustacea

RECOMMENDED TREATMENT: Dylox at a dose of .75 ppm. This dose is repeated three times, three days apart.

OTHER TREATMENT ALTERNATIVE: copper sulphate @ .20 ppm until parasites have gone.

ON USING COPPER: For several diseases listed , copper is mentioned as the treatment of choice (TOC) or as an alternate treatment. When speaking of copper, I am referring to citrated copper (ex: Sea Cure). At NO time should you be using heavily bonded or chelated coppers, as they are NOT as effective against the disease, and you can not measure the amount of copper in your system. Heavily bonded coppers are also much more difficult to remove from your system once the treatment is finished. In order for copper to be effective against a given disease, it must be in the ionic form, and heavily bonded coppers do not meet this parameter. The use of copper also suppresses the immune system for a time, so be aware of any bacterial infections that may set in. Feeding Tetra medicated food for bacterial problems is a good idea during copper treatment. Be careful when dosing copper in freshwater aquaria as the low pH levels usually found in freshwater aquaria make the copper extreamly toxic. Once treatment is finished, remove the copper from th!
e system by doing water changes and adding PolyFilters to the filter system. If you are treating in a hospital tank, allow the fish to recouperate from the treatment for two days before adding it to your display tank. Also remember to remove any chemical filtrants before using ANY medication. All treatments herein assume that the fishes will be treated in a hospital tank. Certain medications (antibiotics, methylene blue) will disrupt biological filtration. If you must treat in your display tank, keep a close watch out for a rise in ammonia.

ON METHYLENE BLUE: Some of the treatments require the addition of 2 ppm methylene blue. This is done in cases where gill damage may be present, as methylene blue acts as an oxygen carrier, easing the stress on the fish.

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