Hi I have a inground pool 4 years old losing about an 1.5 inches in 24 hours. I have let it drain down and it stops at the 3/4 up the lights, just under where the conduit comes out. I thought it was that so I plugged it back up & its still leaking. Water is far below the skimmer & returns. When it stopped at that level, it stayed for a couple of days without losing any more water, so I thought for sure I found it in the light conduits. No leaks near equipment , no leaks at backwash. Tried to dye test around skimmer wells & nothing I could see there, tried around both steps , thought maybe leaking around them. Went all around pool at that light level & could not find any obvious rips or tears. I do have a main drain, but thought if that was leaking it would have kept leaking below the lights & not have stopped for 2 days. Anybody have any ideas?