Description 8″ Pond Pump Foam Pre Filter with Central Hole, Foam Cube for going on the outside of pre-filter pump cages Suitable oblong shaped pumps with the cage on one end. Helps stop pumps from clogging up. Well worth the effort for the time it will save unblocking the pump. 8″ Pond Pump Foam Pre Filter with Central Hole traps particles and debris, encourages biological filtration. Debris which could enter the propeller housing causing severe damage to the blades. When a water pump of any sort has damage to its propeller blades, the pump can no longer move the correct volume of water, Inspection of filters and pumps ensure that vegetation and marine life receive a clean and healthy pond. There are three types of pump pre filters: Mechanical media simply means that the medium work to strain out any debris, dirt or grime and leave the water cleaner and healthier. This often takes the form of a sponge or pad. Biological media uses its surface area for bacterial colonies to spread. These helpful bacteria feed on the chemicals released by fish and plant waste, removing them from your pond water. Chemical media uses an additional chemical such as carbon to neutralize odors, taints to the water and more. For our full range of water garden pond maintenance products check out our other products. https://www.pondh2o.com/pond-maintenance/pond-cleaning-equipment/ Be sure to check out our Information Center for our Pond Blog on Spring Cleaning a Water Garden Koi Fish Pond. Check out our Facebook page for latest news and information.
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