Does anyone here have any experience maintaining in-ground pools or know anything?
Here is the issue.
My g/f's sister had someone come over to open her pool. And they did a terrible job, and charged her almost $400 to do it. So I'm trying to help her with the limited knowledge I have so she's not charged anymore. They tried to rip her off about $800 more saying something was broken but one of the workers went off to the side with her and said the valve was just stuck, he turned it with a wrench and opened it up and it's fine. You just can't do it by hand.
Anyway, the guys neglected to clean the filter nor did they put in chemicals. All they did was hook everything back up that was disconnected last year. There was about an inch and a half of crud on the filter. So I took it out, sprayed it down for about an hour and put it back. They also neglected to put any DE in it, so I dumped 5 coffee cans of DE in each of the baskets where the suction is. I shocked the sh*t out of it and put 3 chlorine tablets in the canister.
Here's the problem. It runs fine for a while, the pressure gauge is around 12. Then after some time it shoots up over 20 and then has barely any movement either through the jets or the suction.
it also has a spa that is lifted up about 2 feet over the pool and off to the side. There is supposed to be a waterfall that spills over into the pool, and that is usually how I gauge the water flow. When the waterfall is strong everything is good. When it weakens I know the pressure has gone up and there is no movement again.
I've backwashed a hundred times but the water is clear and I keep having to put in more DE and that gets expensive.
Again, I am a complete amateur with this, this is all I know and I'd like to figure this out without having to have someone charge her hundreds of dollars again.
(mods, I accidentally created this in TSB, can someone delete it?)