I have read through many of the builds on here, and have a question. I am noob when it comes to cannister filters in general. My goal is to build approx. a 125 gallon plywood/acrylic tank, now with a cannister filter can I drill in the back for the 2 lines for the filter? do they make such connections i could use? is there a sticky on this? it will be a Chichlid tank, probably lake Malawi, or other colorful ones, do I need an overflow for this size tank? or is that for salt water? (told you, total noob here) I do have a 75 gallon Gourami tank, so Not totally clueless...LOL