I personally really like this tank and the way it was setup compared to all of the other AIO's out on the market. I've researched just about every AIO and asked tons of questions of others for 8 months before my purchase. If you want something you can modify and change around do this and that to it. Another tank would be a better choice, if you pretty much want a plug and play tank the Finnex M-tank was my choice. In the past the only problem I had with the system was it was difficult to dig a fish out if it got into the back chambers, but that problem could easily be rectified by jamming a sponge on the return side top and making sure there is something to keep fish from entering the other side if they end up jumping to the back chambers (usually a sponge).