Oase Biotec Screenmatic Pond FilterThe Oase Biotec Screenmatic2 Pond Filter is one of the best around when it comes to easy and efficient pond water cleansing, the Screenmatic filters are some of the best. Each Biotec Screenmatic allows the easy adjustment of the flow speed which can be adjusted as an individual via a function controller attached to the water distributor on the Screenex. The Screenmatic system itself can be folded up and out of the way at a 90 degree angle to the