wat i did... get a long VCD container, some rubber tubes for tank and a control valve (plastic...green,black..) make a small hole near e base of the container on the side wall, connect the valve to e rubber tube (short length will do) insert them into the small hole. fill e container w water till it covers the rubber tube with e valve to ensure no leakage from the hole on e container... if it works..fill it up and place pn ur sump/tank...the next difficult think is to regulate the floe of the valve... happy DIY...