Algaecide Pucks by Pool Blocks (ALG-PB-2PK)

Pool Blocks non-foaming solid algaecide kills green, mustard algae and black algae growing on the walls of swimming pools.

It is not affected by sunlight and keeps water sparkling clear.

Application: Place one Pool Block per 25,000 litres of pool water in the weir skimmer basket when the pump is running.

Doseage: One Pool Block per 25,000 litres