I posted last week that I had found a 30 gallon tank for free. Based on advice here my plan was to run both filters in the larger tank for a while and move the inhabitants of the 10-gallon over. Ultimately I'll use both tanks but wanted to do it this way so I wouldn't have to wait for the 30 gallon to cycle. Well, I just tried to move the smaller filter over and it doesn't fit! The edge of the tank is too wide... Am I missing something? Is there a way to make this work? Should I take out the cartridge from the smaller filter and try to tuck it into the larger? Or should I cut it up and tuck in pieces? I'd love some guidance.