It is important to change filters when they have slowed the flow through the filter unit itself due to immovable saturation in
...At last a convenient way to detoxify your tap water from chlorine & make it safe for your fish. The NEW Oase Dechlorinator also removes chloramines & heavy metals. Capable of filtering a massive 200, 000 litres (44, 000 gallons) of water, it will provide a long service for your pond.