King British Green Water Control targets the tiny unicellular algae in your fish tank that cause "green water". This special additive causes the algae to clump together and fall to the bottom of the tank, where they can be more easily removed. "Green Water" is unsightly, can clog filters, and can be bad for fish health, as it can reduce oxygen availability at night.

One 100ml bottle will treat 900 litres of tank water.

- Helps maximise oxygen availability
- Regular use ensures a sparkling clean tank
- For use in tropical and coldwater aquariums