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nitrate reduction and water polishing
Anjon Remote Variable Speed Controller and Timer — Instruction Manual (PDF)
5" 8" x 6" x 12" 13lb 2PU 700-2200gph 17' 1/5 372 3
poly-resin construction is built to last and stand up to the elements
Small grate (ASGR) is egg-crate shaped material
Helix Bio-Mechanical Waterfall Filters External Pumps nitrate reduction and water polishingThe Helix Bio Mechanical Waterfall Filter is a great filter that uses lava rock and a large biological chamber for biological filtration, nitrate reduction and water polishing. The important distinction of this filter is the 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. For use with liner,
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