It depends on how much quilt batting you stuff into a filter. It is certainly possible to overstuff a filter and drastically decrease the flow rate. If you overfill, the filter will also clog up pretty quickly. I know this from painful experience :wink:pretty-nifty said:Do these decrease the flow/rate?
+1 on the plastic scrubby'sbearwithfish said:+1 to batting also could use those plastic scrubby's. they come about 6 for a $1 at a dollar store... they are a lot like bio balls and many folks use them in sumps..no reason you can not make them fit in a canister