i have been working on the scrubber today for my freshwater tank and im happy with how things are going, its going to take a wee while before i get an algae build up and it will start reducing the nitrates and phospahes but its going well so far, please advise if there is anything i can do to imrpove my setup. Big thanks to everyone especially santa monica for the help and inspiration.
note pump return hose is suspended so it holds the pump off the tab as this reduces vibration noises, i intend to fit a second bulb on the left and the white box is to use for filter wool under the screen so it quietens the flow when it falls and also fine filters the water.
this is the 32mm drain i fitted and just a 22mm return, the little clear tube just goes in the top of the drain to quieten the water draining