I posted this way back when but it's still working fantastic!! It does help to have the background. There was also a thread on MFK I forget the gals name but she was using spa filter canisters (rainbow brand) for her 1500 gallon tank if not bigger.
Here is my home made filtration system I just came up with, so far it's working great. Basically similar to whats in some hot tubs. I wanted more mechanical filtration and will gain some bio as well.
All the parts.
24 hr 115v circ pump 15 gal a min 900 an hour.
Filter and filter fitting. Can be removed in seconds and replaced with new, then clean the dirty one it's 50 sq ft
Hooked up and running in the bath tub to clean it out.
Flow coming out, I had a air injector called a mazzi injector but it was to much air.
Filter hiding behind the 3d background.
So far really happy with the results. Water is crystal clear. I think for the average person a canister filter like a FX 5 would be more economical this was more less thinking outside the box. I am in the spa industry so parts for me were very cheap