Ok all so I got the background all done and fired up the pump and bam 5 leaks. Two from the tank to the overflow box (fixed) and three from the three overflow box drains (rigged). Also this thing is gurgling really loud. Im guessing I can fix the noise by putting some pvc fittings with air hole and line out the top where the water drains in the overflows and Im thinking some weld on 16 around the bottom of the drain fittings will fix the leaks? I cant get a wrench in to tighten the bulkheads as its a ghost overflow and theres no room to work. Any ideas would be much appreciated thanks. I will add some pics shortly.