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My slider backwash valve is stuck. So stuck that I can't even turn the handle. So, I am planning on replacing it with a "Pentair 261152 Multiport Valve Kit 2in. Threaded" valve. First, I want to know if this is the right valve for my DE filter: 261152 Pentair Multiport Valve Threaded.jpg -...

I'm getting ready to drain and refill my pool in order to reduce the CYA and CH. I also have three black spot areas that I can't brush out, I was wondering how to remove the spots after all the water is drained. Here are my test results from yesterday: FC = 8 CC = .5 pH = 7.5 TA = 150 CH =...

The photo is my current pumping station. I just purchased a new Pentair IntelliFlo variable speed pump to replace my old Hayward RS 1.5hp pump. My current pump is starting to lag when turning on, so I wanted to use this for a reason to upgrade to a more efficient pump. So, since I will be...

See the output port on the Jandy valve in the photo? I need to cut everything off from that Tee downward and put a 2" union on it so I can repipe all the way to the pump. My question is, after i cut the Tee off, that will leave only about a half inch of pipe to glue a 2 inch union onto. Is that...

Hello - Real greenhorn amateur here. I'm not a nitwit, but just inexperienced with plumbing and pool hydraulics. I'm getting a lot of air in my pump basket, and I think it's coming from the suction side plumbing. See photo below. My equipment is very old, but I'm not sure just how old. This...

I need to replace my backwash valve. My system is very old and beat up by the sun. Here's a link to the valve I am considering: http://www.poolplaza.com/P-PEN-263034-3184.html Is this the right valve for my filter? Not being very experienced with pool equipment, I want to make sure I'm buying...

Well, like I said, I'm just getting started with pool chemistry. Here's the results of my first test: I only did four tests, and I don't have a FC test in my kit: Cl = Orange (Off the scale) pH = 7.6 TA = 170 CYA = >100 (Off the scale) So, from what I've been reading, I probably need to...

Hello - I'm not a new pool owner, but just recently started getting serious about taking (proper) care of my pool. I have a free form, in-ground pool. I really don't know what the gallonage is. End to end it's 35 feet, average width is about 18 feet. Diving board on the deep end. My best guess...