Sometimes one just cannot see the forest through the trees. As I quickly discovered I did not have any blockage problems between my out float valve and the pump suction connection. Anytime I manually opened the out float valve I had full flow. It just seemed the valve wouldn't open. So, I immediately thought the problem was the float. It "felt" too heavy. Maybe a leak in it. So, any pump suction improvements would be irrelevant. Well, how about the obvious...no flow into the LQ tank? If no flow comes in the water level drops and the out valve closes, never to open again...until you get some flow in to raise the level and open the valve. I shut down the pump, pulled the in hose off the return piping connection and...no water leaked out of the tubing connection. I stuck a bamboo skewer into the tubing connection, jiggled it around a little. Water came freely flowing out of the connection as I withdrew the skewer. Something plugged the hole, but would periodically let a little water through at higher discharge pressures. Probably plastic burrs from when I drilled the hole and didn't de-burr it. I hooked everything back up. Running like a charm...just like it did for the first week. So, make sure you can flow water into the tank before you worry about getting chlorine out of the tank. John T was right on the money -- the first few times I read his post it just never sunk in. I just "assumed" I was getting water into the tank and was consumed with why I couldn't get any flow out...apparently because that is the problem everyone else has.