I'm starting to make plans for a peninsula tank that has been a long time coming. I put a small room addition on my house, and the tank will be a room divider. I stared with plans for a 6' tank, but have since modified the addition plans and robbed myself of a couple feet. I've only got room for a 4' tank, I could do possibly do 5' if I am very efficient with the space, but I haven't seen many 5' tanks. In the 48" sizes, I am thinking 75g makes the most sense... 90, and 110 seem too difficult to clean, and I already hate to gravel vac.
Anyway, I'm collecting ideas for how to filter, aerate, and heat the tank. I'm leaning toward a sump now because it gets most of the gear out of the tank for a nice clean look which is important in this case. I am sure there is someone around here with a sump filtered peninsula who can share pros and cons of the setup, and how they decided on whatever method of overflow and/or drilling they chose. The tank will be home to small fish, tetras and cories mostly. I want a big school of little fish rather than bigger fish.