Quote Originally Posted by Poconos
Welcome to the forum.
I gather by your comment 'the new one is furthest from the pump' that there are two skimmers. If it was a cracked pipe you would probably be sucking air and see bubbles in the pump bastet and returns. Could be a valve setting issue or a blocked line, or, simply a matter of the additional length of pipe adding flow resistance. Are there valves in the return lines somewhere? If so you should be able to balance the skimmer flows by partially closing the one for the closest skimmer. You can also try blocking the skimmer closest to the pump and see what happens to the flow in the other one.
Al
If I close the valve to the 'good' one they both don't work. The 'bad' one is the furthest away from the pump. Strangely enough this morning water began to move through it slowly through the 'bad' one but by lunchtime it stopped again. Removing the valve is going to be tricky as the person had glued it in to the pipe. I'm also wondering if the line is blocked from the skiimer to the valve? We inherited old pipes.