Planted Tank Guru
Join Date: Nov 2009
Location: Missouri united states
I too buy filter material at Walmart.
I buy the densified polyester(not FOAM) which comes in 15" X 17" square and is 2 " thick.
I trace around one of my filter pad's on the polyester and then cut with fabric shear's.
I can then either leave it two inches thick for one pad or,,peel it apart like opening a sandwhich to see what's on it ,and now I have two one inch pad's.
Was pleased lately to see labeling indicating" no added fire retardant chemicals" although I have used the stuff containing them for year's without any issues.
Used to use the polyester loose roll stuff in HOB filter's where it worked OK ,but it did tend to get loose and sometimes work to clog filter tubes on canister filter more quickly if it was not contained in basket ,or fabric mesh.