Recent content by Durhamhouses

Thanks ... I'm such a dumbass. Motor set to 220 Supply is 115. Moved the switch on the motor to 115 and all is well.

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?

Thanks appreciate the info.

I have been hired to look after a neighbours pool and it's bromine.

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.

Thank you. I tested the water when I first uncovered the pool at a temperature of 50 f and it read 0 CYA. After running a few days with the puck dispenser on full (Hayward offline) I noticed no big loss of FC and that got me wondering. I just tested the CYA again now that the temperature is...

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?

Thanks Jason, I appreciate that its not that much difference in the pool. (5 grams in my pool for 1ppm FC) In the end I realized I just needed to extrapolate what you were using for 100% and take 70%. I edited a local copy of the page and added the 70% option to both the fc and eff functions...

So who is supporting the calculator now and can anyone answer my original question? How is the factor determined? function CalcFC() { var ozmul = [6854.95, 4149.03, 3565.44, 3936.84, 4828.12, 5422.41, 2637.5, 7489.4]; var vol = ["X", 0.9351, 0.9352, 0.9352, 0.9352, 0.9352, 0.978, "X"]; var...

Costco in Canada is selling Cal Hypo 70% this year. Up from 65% last year for the same price. Bless their hearts. The calculator does not have 70% as an option. I have emailed the folks at poolcalculator.com and asked that it be added but if not I'm wondering if I simply reduce the factor used...

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...