I've had the liquidator in service for almost two weeks and I get get the FC over about 4.5 ppm. There is one skimmer and one bottom in the pool and I normally take suction from both. When both suction valves are open I can't get the FC level above 3.5. If I close back the bottom drain valve to about 1/3 open I can get the FC to about 4.0 and if I close it completely the FC will go to about 4.5. but I want to run with both vales wide open to get good circulation.
So far I've replaced the ball valve with a needle valve and the check valve with a 1/3 psi cracking pressure check and still cannot get the FC over 4.5 even with the bottom drain valve shut. The highest flow reading I can get is about 4.5 on the rotometer and that is with needle valve wide open. I'm using 10.5% chlorine and have kept the level up.
I wonder if I can put in a suction hose (say 1/2") from the needle valve to the bottom of the chlorine tank and suck pure 10.5% chlorine instead of pulling the diluted chlorine from the top of the tank. Has anybody tried that? I would disconnect the inlet fill hose and block off the existing 3/8" suction hose. Would that work?