were are the filters..i dont see them...if better if you put it under the tank....i think you can try modify the inlets and outlets of ur filters i did that with my sunsun and i have a 180..and it works pretty fine...try to make a cascade with some filtration media..in my opinion not all canister filter capture all the particles and dirt from the tank..my cascade capture alot of things that my canister dont do....
A lot of people swear by diy reverse flow UGFs. I've seen one setup where you run PVC plumbing inlets all over the bottom of the tank, and you connect a powerhead with a sponge filter to the out-take. This sucks the waste from the gravel into the sponge filter attached to the powerhead. I haven't tried this set-up yet, but it seems tempting.
