I was recently using the purigen pre packaged bag/sack and for whatever reason it popped at the seam. However, I still have a jar of it to be used. I was wondering if anyone has any experience using alternatives or making their own instead of buying the seachem bag. I know other mesh bags are usually too big and I have heard mixed results with stockings. I was thinking of using tea bags. Anyone have any experience with using tea bags or at least another good idea that won't result in purigen beads all over my tank?