Absolute Aqua-Vet Trichodina+ is an effective medication when used to target treat a pacific Parasite species. Absolute Aqua-Vet Trichodina+ Is a powerful chitin inhibitor. Absolute Aqua-Vet Trichodina+ very powerful oxidising agent that works by oxidising dissolved organic materials Please note this medication will affect the nitrification cycle so be sure to carry out regular water tests. This treatment will turn the pond water purplish/brown and can be reversed with Absolute 6% Hydrogen Peroxide How To Use: Shake bag first to decompact medication before measuring. Add correct amount to a clean watering can of 1ltr of just-boiled kettle water and using an airstone bubble the solution for 20mins before adding to the pond for best results add to the pond late afternoon. Do Not Overdose. Or use in ponds that contain Salt, Formaldehyde or Formalin Recommended Dosage: Add 10g per 100gal (454L) of pond water. Turn off Ultraviolet sterilisers then add the correct amount of medication to a watering can with 2L of pond water & distribute contents evenly across the surface of the pond. Safe to turn Ultraviolet sterilisers back on after day 7.