You could suspend them, perhaps with an egg crate tray. All you really need is to clear the bottom of the sump, an inch would suffice. Or on the egg crate idea what about 4 suction cups underneath a tray. Suction cups are kind of a natural shock absorber and you always end w/ more than you need...
I intend to set up a 10 gal QT. I've been reading posts here and this seems the way to go for me. I have a Whisper hang on filter that has a sponge as well as a compartment for carbon. How long should I put the sponge in the sump of my main tank before adding it to the QT? Also do you use...
