Helix Bio-Mechanical Waterfall Filter - Large

The Helix Bio-Mechanical Waterfall Filter is a filter that uses lava rocks and a large biological chamber for biological filtration, nitrate reduction and water polishing. This filter uses an air-assisted cleaning feature that makes it possible to flush out the filter through high and low bottom drains. The high bottom drain removes surface scum, while the low bottom drain removes heavy solids. Made of a heavy-duty rotational molded HDPE construction. The stainless steel hardware and high quality plumbing parts are made to extend the filter's life. Includes air manifold for air-assisted cleaning and a 2" Bulkhead (Not pre-drilled, so that you can chose right or left side). Does not require a lid, so can be covered by a large stone or faux rock.