Agreed, you could easily convert that into a sump/fuge no problem. Melev's website is a great place to research sump designs as well as some do's and dont's with them. I'm a newbie to the site as well but if you'd like you can check out my thread I just posted some photos of how I drilled my tank. It's really not too difficult at all. http://www.maast.org/showthread.php?...G-Build-Thread if you're interested. Good luck with your build btw. I'll probably be following along.