Following the advise you guys gave, I took the plunge and made the switch. My only regret is I started late in the day and ended up putting the fish/rock back in when it was still pretty murky. I know this wasn't good for the fish and the rock has fine sand all over it. As I remove bags, I'll clean the rock off. I also need to add much more rock so I can get rid of the canister filter. Here are some pics: