Yeah if you catch it before it's gone too far it's amazing how fast it works!The joys of chlorine!!! It is already going blue/clear!
Update: Tightened up the adapter and a lot more than I expected squeezed out. I wiped it off but it was hardening up, hopefully it didn't pull out of the joint. I used a finger to smooth a small bead onto the inside of the joint.
Then applying it to the skimmer.
Screwed in the adapter.
This is the end of that gasket maker. It was very old, I used it once many years ago. It started drying through the lid, I poked a hole and some would squeeze out, then stop. I'd stick a screwdriver in then some would squeeze out, then stop. I got annoyed and stomped on it and it split open. I applied it to these joints by hand. At least I got one more use out of it before I threw it away. Oh, and the reason it wasn't squeezing was a "plug" almost a 1/4" thick and the size of the entire top of the tube had hardened over time.
Finally I'm glad I got at least a quad outlet installed by the pool. The Intex pump with the built-in GFCI takes up one side, and the two lights I got take up the other two outlets. I'm thinking I'll add in at least another duplex box. That way we can have somewhere near the pool to have a phone or speaker charging station, or if I need an outlet for a tool while working out in the yard.
Oh, and an aside. I've seen people here say "you can't have two GFCI's in line with each other, they will trip." That always seemed not logical to me. If the GFCI is tripping, it's either cause it's doing it's job or it's bad, not because there are two in line with each other. The outlet is GFCI, as required for an outdoor outlet. I plug the GFCI Intex plug into this GFCI outlet. It ran all summer without issue.