What causes greenwater?

In certain conditions, large quantities of microscopic algae grow in the water. They create the green water that spoils the appearance of a pond by making it impossible to see plants and fish.

It’s important not to confuse green water with the long strands of blanket weed that are also very common. Green water algae are so tiny that ordinary filters cannot trap them.


A revolution in the efficient elimination of green water algae.

Key Benefits Include:

  • Can be positioned in almost any position to complement your pond’s needs
  • Can by fixed to the pond wall or left free standing
  • Comes with 5 metres of cable, is easy to install and maintain and comes with a 2 year guarantee

Hozelock UV 11w for up to 4000 Litres