I am new to reefing, and quickly just love it, but only have a 50 gallon system, max G2 200. when I go to LFS and I see the larger tanks I think "wow I would love a big tank." I would love the big fish and the nice tangs and the diversity large reef tank would afford me.,. But then I'm thinking what you own, owns you back. i've already done a couple water changes to my small 50 gallon system. (I know small is relative because there are plenty of folks with nice nano tanks into them, my tank is large.) That's not a big deal. I process 5 gallons of water very easily. But at 200 gallon tank? That would mean what every 7 to 10 days I got a cycle in and out 20 gallons of water . I'm thinking i would own great reef tank, but the reef tank would also own my ****. Does a large reef tank just really take a lot a lot of effort in terms of the amount of water you have to deal with in the change, particularly? oh, and what if you'd ever want to move? If I had a tank like that, I would wanna make sure it's the last place I ever lived at. who would ever want to move at 200 gallon reef tank?