The canister is about 3 foot below the tank. But i have already tried it in different positions i sat it on the ground about 4ft below the tank and there was hardly any difference and i then tried it about 1 foot below the tank and still the pressure was the same as before.
I have cut the pipes down so thee is no slack in them that way there is less distance for the water to be pumped, and still there is hardly any difference.
I have an external filter downstairs, It is not a known make like fluval or eheim but it manages to circulate the water great. I might go to a few LFS
to ask what they think. Maybe they will let me bring it up and show them.