NT Koi Care Formaldehyde 2.5L UV & Dosing Exhaustion is indicated by a

Exhaustion is indicated by a pronounced discolouration of the beads to dark brown or black

Colours Available:

Specially Formulated For All Carnivorous And Omnivorous Cichlids

250 L (300 US gallons) as needed to reduce chlorine and chloramine levels

NT Koi Care Formaldehyde 2.5L UV & Dosing Exhaustion is indicated by aNT Labs Koi Care Formaldehyde 30% is effective against protozoan parasites and flukes. It is especially useful in treating flukes because of it's ability to penetrate mucus and reach the parasites that would otherwise be protected from other bath treatments. Caution: Formaldehyde is a hazardous chemical and should be handled with great care please read the warnings on the label carefully.