CrystalClear® KnockOut™ PLUS Broad-Spectrum Disease Treatment Color Changing Digital temperature control technology ensures

Digital temperature control technology ensures accuracy

Facilitates healing and reduces fish stress

Zinc Sulfate

you can protect your air pump by preventing excessive back pressure

Can be used in cold or deep water

CrystalClear® KnockOut™ PLUS Broad-Spectrum Disease Treatment Color Changing Digital temperature control technology ensuresCrystalClear KnockOut PLUS is an all natural, fish treatment that eliminates PLUS prevents external single celled parasites or fungal infections. KnockOut PLUS works extremely well with pond fish species such as koi and goldfish and unlike most fish treatments, there is no need to remove your filters before treatment. Furthermore, when used routinely, KnockOut PLUS works as a strong preventative treatment. Use anytime new fish are added, during pond