hth Ultra Kleral is a non-copper algicide used to both prevent or kill algae. It also stops limescale build up as well as helping to prevent staining on pool walls and floor from metals in solution in the pool water. It can be used as a single summer long algicide or a one dose winter long algicide.

Dosage:
On starting pour 80ml per 10m³ of water
For maintenance, every week pour 40ml per 10m³ of water. In case of green water, pour 150ml per 10m³ of water