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In Florida. I am moving. House not sold. Hard to find anyone to watch 8 X 12 ft swim spa. Has salt water with Cl generator so Cl stable over many weeks with no use of spa. Ph get wonky at times. I will be back every month to check on it. Any opinions on 1) leave it filled, or 2) drain it...

As per the spa sticky thread: "Never let FC drop to Zero for any length of time. Keep it between 3-6 ppm normally, min of 1 ppm, and shock to 12 ppm once a week." If my CC is 0.5 or less, do I need to shock once a week? thanks!

So I filled the new spa today from my well water and I have that nice clear yellow iron color. I am going to have my water guy install a Penteck DGD-2501 dual gradient filter in a big blue housing so I can use this set up for my every 3 month water changes. In the mean time, any harm in using...

So I asked Master Spa about using a SWG and of course adding salt to the spa for this. Their response was, "We don’t recommend the use of salt systems in the tubs as it converts the salt to a form of chlorine that is not recommended by the manufacturer of the acrylic as it can have a negative...

I am a long time TFP desciple with a pool. Recently moved and now bought a swim spa (1200 gallons). It is Master Spa with Ozone. After reading about the problems with FC burning with Ozone, I feel I should turn it off. I am well versed using hte TFT-100 kit and testing for FC/CC/CYA, etc and...

Moved from here. I am having same problem...Florida pool, plaster 13,000 gallon pool SWG CYA 70-80 TA kept around 100-120 ph 7.6 FC=6-8 CH=450 I noticed it last year when I started getting more aggressive with bicarb as I was letting the TA drop to 30-40 and thought that was too low. Now I...

Long time BBB / TFP reader and believer. I am in central florida (Vero Beach)...12,000g pool, SWG I think I have mustard algae. I keep my SWG pool FC between 5-10, but recent mega rain and deck runoff likely pushed up phos levels in my pool + I have been lazy this winter and did not brush the...

FC=5 Ph=7.5 TA=50 CH=650 CYA=90 Salt=3000 Borate=40 SWG pool 13,500 gallons, plaster pool Temp=80 (Florida) I was concerned about my CH going up (now 650). I read various posts about watching the CSI. With the Pool Calculator, my CSI is like -0.56. So it appears to be at risk for leaching...

I am helping a neighbor turn around his neglected pool. He has very high CYA level (>100+) and he has alge in pool...we are draining water and replacing (1/3 of pool at a time to avoid ground water pushing up his pool floor, etc)....Then we will SLAM it when I get the CYA level down to 30-40...

Deep chemistry question here: Lets say your pH is 7.5 and your TA is 100. If you have a SWG, the pH is always rising up due to Hydrogen gas production (and then gassing off) with SWG. So, you always add HCL to the pool 1 or 2 times a week. I would think this would drive down the TA in a...