Pond Clear Pro 2-Step Pond Clearing Treatment - 20,000L "Using a unique two-stage process this natural, microbial treatment starves algae of nutrients and digests the resulting dead organic matter, leaving your pond crystal clear. Step 1 Kick Start Oxygenator - natural bicarbonates and related substances release oxygen, starving algae and weed. Step 2 Pure Aqua - introduces a natural biome of bacteria to maintain pond clarity. Note that to work, the microbes needs the water to be 10°C or more to work - best used April to October. Suitable for all pond types including fish ponds & wildlife ponds. May also be used in water butts eliminate algae. If your pond has excessive blanket weed, first remove as much as possible before treatment . Suppled as a 2 Step Pack for up to 20,000L ponds, instructions included Store in a cool dry place, out of direct sunlight, beyond reach of children Keep pack sealed to avoid water absorption Avoid eye contact. Wash hands after use Non-toxic to humans, pets, fish and wildlife Please Note If you have fish in your pond, it is critical that you DO NOT OVERTREAT with the Pure Aqua as the microbes consume oxygen in digesting nitrates/nitrites and dead organic matter.It is important to watch for signs of stressed fish and aerate if necessary.If you have a pond with fish, while the Kick Start Oxygenator will help increase oxygen levels, the subsequent application of Pure Aqua may deplete them. We recommend that in such an instance, if you do not have a pump, that you add the Pure Aqua at daily intervals over a period of 4-5 days, keeping an eye on the fish.Should you have fish and they begin to look stressed, here are some suggestions for quickly increasing oxygen levels Turn on your fountain or other water feature Install an air pump Spray water with your hose or lawn sprinkler" Potted: N