Focus Hydroclear Algae Treatment is effective against black algae green and brown varieties and can be used as a winteriser in the non-swimming months.

Active Constituent
60g/l Benzalkonium Chloride 120g/1 Poly Oxyethylene (dimethyliminio) Ethylene (dimethyliminio) Ethylene Dichloride

Size
1lt

Benefits
Effective against black algae green and brown varieties.
Easy to use.