Seachem ParaGuard is the only fish and filter safe aldehyde based 10 Percentage by weight parasite control product available. Unlike highly toxic and difficult to use formalin based medications Seachem ParaGuard contains no formaldehyde or methanol and will not alter pH. Parasite Control for marine or freshwater aquariums Contains no toxic methanol and will not alter pH Safe alternative to formalin Seachem ParaGuard employs a proprietary synergistic blend of aldehydes malachite green and fish protective polymers that effectively and efficiently eradicates many ectoparasites e.g. ich etc. and external fungal Per bacterial Per viral lesions e.g. fin rot. It is particularly useful in hospital and receiving tanks for new fish and whenever new fish are introduced to a community tank. DIRECTIONS In the aquarium use 5 mL 1 capful to every 40 L 10 gallons. Repeat daily as required as long as fish show no stress. For 1 hour dips use 3 mL per 4 L 1 gallon. Dips may be extended if fish show no evidence of stress. In case of eye exposure promptly and thoroughly wash eyes with water and seek medical attention.