No, do not remove the plug.Turned off the pump, stuffed my garden hose down there and turned it on. no bubbling or water flow coming out of either of the two things in question.
Edit: Oh, I was supposed to use the front hole! I have to remove that plug first?
This seems a little weird to me then --wouldn't they have to be a bit below the skimmer box? they are roughly at the same level of the skimmer box.
If you can show the system, we can look for anything that the lines might go to.
The front hole is plugged, so they are probably not equalizer lines.This seems a little weird to me then --wouldn't they have to be a bit below the skimmer box? they are roughly at the same level of the skimmer box.
It's a T-cell15I’ll let them help with the layout- but do really have a tcell 5?
I am hoping its actually a t15 with your size pool.
I tried the garden hose -- nothing seemed to happen but it sounds like i was supposed to use the other hole in the skimmer box (it's plugged up, however)I can't tell what the suction lines might go to.
Maybe try the garden hose to see if anything happens.
If you can't get any action on the lines with any combination of valves, then I do not know what they might go to.
If you lower the water below them, buy 10 ft of 1/2 or 3/4 inch clear tubing at HD. Twist it around while gently pushing it to snake it past any 90s and suck it out with a shop vac. (Duct tape the little hose up the vac hose). Once empty, install threaded plugs. Then leave them forever or reinstall the decorative covers next year, needing yearly suck outs.