Flocculants

Ensure your edges are hard. Loose soil can easily enter the water body via constant lapping at the water’s edges.

Edges can be hardened by: Geofabric, crushed rock, or sand.

Apply flocculant on a rain free, low wind day. Ensure application is made when the forecast looks clear to avoid run off immediately entering your treated water body.

If your water body has never had clear water before, you may want to consider other options before using a flocculant.

Flocculants are not a permanent solution to clear water’s and are best used in conjunction with other water purifying methods.

For ponds and dams with extremely high sediment loading i.e. chocolate brown in colour or ponds and dams that have never had clear water before, it is essential that the source of mobilisation is dealt with prior to using this product.

• soft edges
• run-off
• bare ground

To reduce the impact of mobilisation, dam edges can be hardened with geofabric, crushed rock, sand or shallow-rooted plants.

Flocculants will not work effectively if: it is not applied correctly, the water pH is outside the optimum range, the source of the sedimentation is not dealt with, the sediment load is extremely high, or the incorrect dosage rate has been applied.

Poly aluminium chloride (PAC) has many advantages over aluminium sulphate: PAC works at a much lower concentration (as much as a third less). Lower doses means leaving smaller residual aluminium in treated water. Using PAC generates less volume of sludge and PAC works over a wider range of pH, meaning you can apply PAC across a larger variety of water types.