Bacteria
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AquaClearer brand beneficial bacteria naturally balances the pond and keeps it clear and healthy.  This is a natural bacteria found in all natural bodies of water.  We just want a concentrated amount of bacteria in the filters faster than nature would build them up on her own, so we add AquaClearer.  The bacteria serves several functions in the balanced pond ecosystem.  First off, it competes directly with algae for the free-floating nutrients in the pond water.  The stronger and healthier your bacteria colonies are, the cleaner and healthier your pond's water will be because there are not enough nutrients in the water to support the suspended algae that turns pond water green.  Bacteria also works in the ecosystem to convert the harmful ammonia into ammonium nitrate, which is plant fertilizer.  The plants, their roots unconstrained by pots, take all the nutrients they need to thrive directly from the pond's water, literally starving algae out of the entire system.
Green water occurs when nutrients are available for suspended algae to form.  Literally millions of single-celled algae are suspended in the pond's water, tinting it a deep emerald green.
Adding a pinch of AquaClearer once a week in the winter and once a month in the summer will keep your pond crystal clear all year round.