JohnstonAtoll
New member
I think I am ready to put in a sump as I've been ordering components for it over the past few weeks. Drilling the tank is not an option for me right now as it is up and running and there is too much stuff in there to empty it to drill it. I've been thinking of putting in an external overflow box but this whole sump deal is new to me as I've been using canister filters and doing constant water changes over the past few years. My first and most important question is that is there an overflow box that is low risk of losing siphon? What would the best one be? What size overflow will I need and will I need 1 or 2? My tank is a 125 gal. and will be using a 100 gal container as a sump. Your help is greatly appreciated
