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The Helix Moving Bed Waterfall Filter is a no-maintenance filter is for biological filtration and
is meant to be used alongside some other form of filtration,. These additional filtrations can be an
under-gravel grid, bead filter or natural planted bog. It is self-cleaning and needs zero maintenance (if placed after a mechanical filtration). It can convert the digested waste for 3 pounds of fish food each day and with the use with an air pump it can increase dissolved oxygen levels in the pond. Made with a heavy-duty rotomolded HDPE construction that is easy to hide, it also contains stainless steel hardware and high quality plumbing parts that extend the life of the filter itself.