My wife and I bought a home last fall, and we're trying to open our in-ground pool for the first time. It's not going as well as expected for us pool newbies.
A pool company opened it for us, but I noticed that my filter pressure increased from about 10 to 20 after I added stabilizer. We have an older Hayward DE EC-65 filter. Bumping it sent the pressure back down to 10, but it kept climbing back up and causing the flow to decrease. It's still moving, but not strong enough for me to use the vacuum hose to pool the smaller dirt off the bottom of the pool or to have the most effective results from the skimmer. The water is pretty clear besides the dirt on the bottom of the pool, so it looks as if the shock helped and the chlorine is at least circulating enough to keep it fairly clear.
I backwashed the filter yesterday, and it was running fine for a couple of hours. Then, the pressure started climbing again. I'm at 20 right now, and the flow is again too slow to use the vacuum. I noticed when I backwashed it that some stabilizer granules came out with the DE.
My next move is to take apart the filter to clean the fingers, but I'm just wondering if there's something I might be missing here. I'm also wondering what the best way to clean the fingers might be? A pool supply store said to use muriatic acid, but I've read elsewhere that I shouldn't use that.
Any suggestions would be much appreciated. We're hoping to have it ready for swimming by Memorial Day weekend.