At 30sec, the 2 red valves, i turned off the first one that is visible at 30 sec(after i shot video) and that just stoped flow at one of the skimmers... So one pipe goes to each skimmer???, where the heck is the main drain? Im trying to check for air leaks because of cloudy pool. So if i leave 100% main drain for a week and if it clears then i'll know, viceversa.
Just repacled sand with a little de.
Also i have 4 returns 3 have ok flow, if i block the 3 with hand, the one with no flow starts to bubble up real good, what could this be?