Thanks for the responses.
Richard320, yes I have 2 holes at the bottom of my skimmer basket. One does produce suction. The other does not, but when I put a garden hose in the non-suction hole, I can feel the cool water coming out a hole about 2 feet below the skimmer going into the pool. I'm not sure what a diverted valve is, but I do have a valve that allows me to suck from skimmer, main drain, or both. However the main drain does not have suction at all. I took off both covers and found very hard white material in there. I've been diving down and chipping it away. What's weird is when I shut off the pump and shove the garden hose in the pump, I can feel cool water in the main, yet it does not have suction. I will try Drain King. I cannot hook it to the main drain though, so do you know where it should go for best results?
Kimkat, I have had this place for almost 2 months and I do not think the main drains worked. They had grass growing right up to the pool. The sand was minor. That white, dense chalk is the main issue.
Thanks again guys!