Hello everyone!! I am super new to AP. I was reading about Hydroponics to use to grow fodder to feed my livestock and stumbled on a link for AP. This is an awesome concept and I look forward to building my own system. I am still in the R&D stage. I do have a few questions for you guys though. 1). what size sump should be used with a 330G fish tank? 2). What is the best kind of "good" bacteria that should be introduced into the system to help keep things running clean? Thanks.