Im considering using a sump on my 120x60x45 tank but I cant/wont drill the tank. Does anybody have experience with this kind of setup or know where I can find an article about it?
You could use an overflow box or a DIY overflow pipe. PF had a DIY article by Andr3w or something that showed how to do the DIY one, I think I also found a similar design on another site at one time, I'll have to have a look.
There's not a whole lot of equipment. Just an overflow, a pump to match and pvc. I made my inlet into a 6ft spraybar. Who said I don't have enough oxygenation??