ok getting a filter should not be a problem, I will be able to put it under the land section since it is blocked off my eggcrate and the FBTs will not interfere with it. If I were to reduce the land and add more water, I would be looking at ripping the whole thing apart and starting from scratch. Not really something I want to be doing at this stage. Would it be suitable if I removed some of the rocks to allow more swimming space? Like I said I want to change it without having to change too much.