The Oase BioTec ScreenMatic2 18000 Large Pond Filter SystemFlow is a flow-through Biomechanical Gravity Filter with multi-stage filters in a compact package, perfect for large ponds with high fish load. Mechanical filtration separates out particles and debris using a 300-micron mesh screen, which is cleaned automatically by the filter every 15 minutes!
Mechanical stage: Water flows through debris screen, which deposits debris into separate tray for easy removal
Biological stage: Water passes through a foam filter zone that promotes colonization of beneficial bacteria
Final stage: "Phosless" cartridges bind phosphorous and remove it from the water column, inhibiting algae growth
Boasts an amazing filtration capacity relative to its size!
Partially self-maintaining product
2 year warranty (additional year upon product registration)
Ships truck freight - you must be available to unload it!