I just opened my pool and seen part of my vinyl lining is sagging. Also, I am starting my 3rd year and was thinking it would be a good time to drain pool which would also make fixing vinyl easier. I am able to drain from spa and even skimmer but not the main drain. it never primes. The water is green so its hard to see below but I swept and vacuumed (with battery charged vacuum) the main drain and picked up debris/worms. I hosed water back through the main drain and even refilled spa to help with prime/suction since its higher up from pool. No matter what, it doesnt want to grab from the main drain.
I have tested multiple valve setups
1. Only grab from main
2. Grab from main drain and spa or main drain and skimmer
3. I have started fully at spa/skimmer and slowly switched to main drain
No matter what, if there is water in skimmer or spa (2 different tests), it primes and grabs but once they empty (grabbing from main as well) or once I switch complete main, all water stop. This is all happening under WASTE. Pool was most likely built between 2000-2010.
I'm thinking worst case I just try to fix vinyl without draining and since the water has been refilled during hot season every week, the water isnt technically old since its always circulated? I was going to use the hot water process to soften vinyl and pull up...
I have tested multiple valve setups
1. Only grab from main
2. Grab from main drain and spa or main drain and skimmer
3. I have started fully at spa/skimmer and slowly switched to main drain
No matter what, if there is water in skimmer or spa (2 different tests), it primes and grabs but once they empty (grabbing from main as well) or once I switch complete main, all water stop. This is all happening under WASTE. Pool was most likely built between 2000-2010.
I'm thinking worst case I just try to fix vinyl without draining and since the water has been refilled during hot season every week, the water isnt technically old since its always circulated? I was going to use the hot water process to soften vinyl and pull up...