Activated Carbon Filter Media

Leaf debris can leach tannins into your pond water as they start to decompose.  This can discolour the water brown (similar to a teabag in a cup of water).  As tannins are mixed in solution ('staining' the water, rather than consisting of particles of debris), this cannot be removed mechanically (i.e. by filter foams or via a UV clarifier).

Activated carbon will help absorb tannins when this is placed in the flow of water (in the outlet of a stream or inside a pond filter).  The activated charcoal will also help to ‘polish’ the water in aquariums and ponds, to add an extra level of clarity by removing fine particles and dust.

It is advised to use silt removal treatments to help reduce the sediment build-up, which is likely causing the release of the tannins. Pond cover nets will also help to reduce sinking leaf debris during the autumn and winter months.

• 5000ml treatment - Treats approx. 5000 Litres of pond water.