Evolution Aqua Pure Pond – Beneficial Bacteria for Ponds | Pond Bacteria Treatment & Healthy Water Maintenance for clear pond | Aids biological filtration and Fish Safe Pond Equaliser | 2000ml[EASY DOSAGE] Similarly to Evolution Aqua Pure Pond Bomb simply add Pure Pond directly into your pond filter for optimal results, it can also go in the Pond but for the best results place in filter. Works with pond sludge treatment, pond algae treatment, sludge bomb or a pond green water treatment, Pure Pond balls provide a long lasting and eco friendly solution compatible with our full range of products. [MAINTENANCE] Achieve consistent crystal clear