Good Afternoon....I just have a quick question, b/c I'm clueless.... bought a house with a huge IG pool (18'x36') 10' deep on deep end. I know the skimmer, and return ports (ours has 2 on deep end-no idea what previous ownerships have done) the 2 on deep end are staggered more or less on top of each other, about 18" apart, and one return by steps on shallow end. THEN there is a port for 'something' 1/2 between deep end and shallow end with a cap about 10" down from edge of pool. Took cap off, nothing, no flow or suction best we can tell. Any clue what this port is for? Should have taken a pic but didn't think about it.
Thanks for any feedback...
Thanks for any feedback...