So this is what I have come up with.
125g (72x18x22) will be the base, then throw in a crap ton of plexi, pvc (flexible and rigid), and a bunch of drilled holes and hopefully this plan will work.
Going to run two 2 inch over flows and two 2 inch returns. The overflows will split into two 1 inch lines as shown in the pic.
The red is going to be pot scrubbies or bio balls, the orange is going to be ceramic rings, green is just sponges, blue is the pumps, and yellow is the filter socks.
Although I am still not understanding where the money savings are. This thing adds up quick!!!! (mostly because I have to buy a 125)
Hopefully the pic says it all. Still need help choosing pumps. I need either 1 massive one or two pretty decent ones. Trying to turn the tank over 3-5 times an hour. So trying to flow 1800-3000 gph @ 5ft. Any one got a pump in mind?
Thanks for reading. Please comment!