We've had a rough year and a half between medical problems, my fiance not being able to work (he was an OTR Truck driver and we found out about his illness when he was lifelined while we were almost 400 miles from home), constant doctor's appointments, and just nothing going right basically but, we finally got a break! We got his medical problems under control enough that he could go back to his career and now he wants to build me a fish room! Yay! I've done quite a bit of research but I'm having trouble deciding how I want to filter my tanks. I'm leaning towards running a central air line with a linear piston air pump and running sponge filters on everything. It would be the cheapest and easiest option. I could also set up a central filtration system with a sump. I wouldn't have to acclimate between my tanks but, I have very little knowledge on sumps so I would have to do way more research and I don't know if I want to lose that much space setting up a sump large enough for that many tanks. There's also the risk of spreading an illness or parasite to all of the tanks. I also thought about running a bunch of huge canister filters. This is my least favorite option. It would be bulky, messy, and I'm not sure if it'd work but, basically, I would run a huge canister filter to a couple tanks and bypass having a sump. Which do you recommend?