- Increases Filter Capacity
- Prevents Small Fish and Debris from Getting Sucked Up
- Uses Coarse Foam to Extend Time Between Cleaning
The pre-filter or intake sponge is a simple foam cylinder that is designed to slip over the intake tube of hang-on-back (HOB) and canister filters. The filter intake tube often has large openings that allow sizable objects to get sucked up by the filter, potentially ruining the motor, so use a pre-filter sponge to prevent baby fish, dwarf shrimp, little snails, plant leaves, fish food, and other debris from entering the filter.
An intake sponge also provides valuable surface area to grow beneficial bacteria, which purify waste chemicals in the water and make it safe for your fish to live in. Finally, it adds mechanical filtration that extends the life and efficiency of your filter media.
Pre Filter Sponge
Pre Filter Sponge
This pre-fikter along with the filter hacks yall taught me, my tanks are crystal clear and my fish enjoy getting "seconds" from any 'breakfish' they might have missed. You guys are awesome, thanks!
I use Eheim Pre Filters on both of my FX6 intakes. The Eheim sponges work very well however start to restrict flow in a very short time because of how fine the sponge pores are. I noticed the Co-Op medium pre filter sponges were very close in dimension to the Eheim sponge, with the exception of being approx 3/4" longer. All you need to do "carefully" cut the Co-Op sponge down to size (preferably the enclosed side) and with a little maneuvering slide it into the Ehiem pre filter. It works great, and I'm not having any of the flow restriction issues I was having. Just clean the pre filters when you do a water change or every two weeks minimum.
The large pre filter sponge works great on my marineland canister filter would recommend this product for all canister filters