With the Screenmatic filters, Oase have produced probably the most technically advanced filter, once again setting high standards for technology and quality within the pond industry. Simple operation, fast, clean maintenance and an outstanding filtration result are the unique features of these new filters. A specially designed sieve retains all debris particles above 300 micron, which are pumped into the filter. For 2006 this sieve has been converted to a belt which is rotated several times every 30 minutes via an inclusive12v motor and scrapped clean as it turns. The waste falls in to the collection basket for quick easy removal. After this the water trickles back through a special mat where it is enriched with oxygen, it falls into the chamber below, flows through the filter zones and then reaches the next filter chamber Individual Chamber. The nitrosomonas and nitrobacter bacteria present in the pond water settle and multiply in the oxygen rich zones (blue sponges) and in the oxygen poor zones (red sponges and individual chamber). The individual chamber situated just in front of the outlet, so called individual because every customer has the choice, which filter material to insert (ie Oase Phosless). The chamber is equipped as standard with Zeolite. Supplied with a plunger to allow for easy cleaning of the foam cartridges.