-50% on a selection of fish food
Each treatment targets a specific cause. eSHa EXIT treats white spot and velvet, with no copper or formaldehyde; other formulas target skin and gill flukes, nematodes or hole-in-the-head disease. Broad-spectrum eSHa 2000 treats more than 18 bacterial and fungal conditions in a course of 3 consecutive days. If a course has no effect, its product page advises checking the water: a full water test often finds the cause that no bottle can treat.
Three rules recur on the product pages: remove activated carbon and switch off the UV before the first drop, as they capture the product; dose according to the actual volume, for example 20 drops then 10 and 10 per 100 L with EXIT; and keep the filter running. In aquaponics, as the eSHa 2000 product page points out, these products for ornamental fish must not be added to the loop of a system whose fish or vegetables you eat: a sick fish is treated in a hospital tank. Aquarium salt supports recovery, at one heaped tablespoon per 20 L of fresh water added.















