I cleaned my three canisters the other day, one after the other, and I'm tired of the minor inconvenience of pouring the biomedia into a separate jug. I'd much rather be able to pluck it from the tray, and toss it into the jug, with no pouring involved. I know, what an appallingly minor triviality. A few stragglers inevitably spill out onto the floor and I have to pick them up and rinse the dog hair off of them which is downright annoying, even if only mildly so. I've seen nylon pantyhose suggested but I'm looking for larger nylon bags that will conform to the shape of my Eheim canister and the media trays in my Fluval and SunSun with small enough holes to prevent the escape of Eheim Substrat Pro--the only bio I use. Anybody have any recommendations?