I'll use some lead. Should the bubbles come out of the holes in the
foam or like my wonderful small fishtank one, have the air source
slightly above the holes so it sucks the water through the filter?

wrote in message ...
yes. good idea. PVC with holes in the pipe part in the foam .. but weight the
bottom down with something. the complaint I have about those foam things is they
float. be sure to get open cell foam. Ingrid

(George Thompson) wrote:
I suppose with a lump of filter foam, & a modified hose pipe I could
do the same for a fraction of the price. Plus I already have two air
filters, I just need to rig up some housing to use them outside.


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