Hello everyone I am new to this website and also new to pools. I have a question. I have 2 skimmers one far and one near, now with both (Jandy) valves (for skimmer) open it sucks in a lot of air so i called leak company and they charged me 200 just to say it was in ground and they could not do anything about it and i would have to call someone else. So i wanted to see if maybe it was something simple so i took the valve apart and replaced the o'rings and switched it with the other skimmer to see if the suction leak would follow and it did not but now if i turn the Near skimmer about 85% open there is no air going into the strainer. but if i open it 100% there is a lot of air going in. So my question is Do i have an underground leak or can i just run the pool with the near skimmer @ 85%.. I am trying to give all the info that i know so please ask and i will try to find out more or take pictures.. thank you