Hi all...New pool owner here with questions. I called City Hall today to see if there was any info on record of when my pool was built. Nope. 
Maybe someone here could help with some basics:
House built in 79.
Tagelus filter dated 2004.
Gunite in-ground pool 16' X 40'-ish.
Pump/Filter station.
What does the little pipe that elbows and is plugged do?
My skimmers (2) have 2 holes each and the holes furthest from the pool have suction to the filter...What do the other holes do?
There is a plugged hole next to the ladder in the deep end...It seems to do nothing. At first when I removed it today there was some suction (Pump off) for about 30 sec. I turned the pump back on and nothing happened.
My drain has no suction.
There is a hole about 18" below the shallow end skimmer that is open and does nothing.

Maybe someone here could help with some basics:
House built in 79.
Tagelus filter dated 2004.
Gunite in-ground pool 16' X 40'-ish.
Pump/Filter station.
What does the little pipe that elbows and is plugged do?

My skimmers (2) have 2 holes each and the holes furthest from the pool have suction to the filter...What do the other holes do?
There is a plugged hole next to the ladder in the deep end...It seems to do nothing. At first when I removed it today there was some suction (Pump off) for about 30 sec. I turned the pump back on and nothing happened.
My drain has no suction.
There is a hole about 18" below the shallow end skimmer that is open and does nothing.
