At the outset, I would like to apologize for starting another thread about the same topic...I did not know how to update the title of the last one.
After digging up the ground to get under the concrete to get to the skimmer (no leak found)
Digging up the ground to replace a suspect return line (where the leak was not)
After doing the dye test and not finding the leak...I was pretty ticked off
I also build a pressure tester to try to find the leak and that did not work...but something else happened...as I put water pressure on the skimmer (after dropping the water down below the light to caulk it again) Water came OUT from between the light niche and the light itself...which I thought it odd...
What would he skimmer line have to do with light niche....THIS IS SILL UNKNOWN.
I plugged one return ...thinking if it was a return, it would suck he dye in...it did not. I then plugged both of them.
I went back to the skimmer and dropped dye from the top...away from the hole...it took about 3.5 min for it to get to the bottom...but sure enough the dye tendrils started to get sucked into the hole....but there is no visual or physical dampness under the skimmer or connections.
I plugged the skimmer up (thinking if water came OUT of the light fixture, it might be going back in.
And sure enough
So...This seems to be happening at two locations...which might be part of the same suction line... I dont know...Any ideas on how to fix this.
This is what I do know.
The housing is probably either brass or copper...Im thinking brass.
There is only one port hole...where the wire goes through...
Could the light also be plumbed to allow water to move behind the light.