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I have a 1hp pump wired for 220 and it is running slow. It runs full speed until it primes and then slows down. Can only get to 5 PSI on the filter guage? Changed the capacitor with no change. Checked centrifugal switch. Wondering if a winding burnt out? Anyone seen this?

Are there different reagents to test from Bromine? I read that a chlorine test can be done and the result multiplied.

Who is supporting The Pool Calculator ? There is a mistake I'd like to report.

Is the app available yet?

I have a pool with sub 7.0 PH. FC is 11pm. It has green algae and I want to shock it. The CYA is around 50ppm. How much chlorine can I safely add? Obviously I have added PH Up and will wait but wondered what the tolerance or risk is in this case to the liner.

When you have low to none CYA and you use pucks is the chlorine bound to the CYA from the pucks themselves. Is the chlorine dispensed already stabilize or will the sun burn it off until the overall CYA level is increased?

How long does it take to damage a liner with high Chlorine and Low PH? Put another way how long do you have to correct the balance before it's too late?

This pool had a liner failure the winter before last and was left partially empty this past winter (Toronto Area). I have no idea if these cracks existed before but now we need to fix them before a new liner is installed. Any advice is welcome. One side of the section crack is about 1/8" higher...

I think the trick was letting the water get below 60 before closing and opening it before it got above 60. Well that and not using a closing kit full of junk. Just a little algae around the water line ..vacuumed the bottom to waste...shocked to 12ppm using calhypo. PH was 7.2 raised to 7.8 /...

Brain-eating amoebas have killed three people so far this summer. The victims include a 9-year-old Virginia boy and a 16-year-old Florida girl; both apparently became infected while swimming in warm, stagnant water. That makes the typical summer health warnings about swimmer's ear and sunburn...

PH was 7.4 for the last week and I've been trying half heartedly to raise it without raising my TA so I aerated for a day and got it up .2 ish. Today I aerated again for maybe four hours but also threw in a box of Mule about 2-3 hours ago as per the pool calculator. I just checked it and it's...

What is the rate of PH rise due to aeration?

How long should you wait after using Cal Hypo to bring your chlorine level up to a normal level ..in other words not shocking the pool but merely adding a few ppm to bring it up to say 4ppm ..dissolved in a pail and poured in?