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For the past several weeks, our pool has been losing FC at 2.0 ppm per day. We have been running the SWG 12 hours per day ay 80%-100% output, with no effect. The pool has been very well balanced, is perfectly clear, and does not lose any chlorine at all in the overnight hours when pump is off...

My spillover spa was installed without any lights. (Who does that??) I have tried various floating lights - just not happy with effect. I just purchased a rechargeable LED light (Main Access Smartlite Underwater LED Light). The mounting bracket is to be installed to the step with four small...

Our Pentair Mastertemp HP heater (installed 2017) has become possessed. Over the past week, it started automatically shifting to spa mode and setting the temperature to 272 degrees, or something crazy like that. We re-set all the temperature settings, but it seems to shift back to spa mode /...

We just opened our pool a few days ago and turned on the heater for the first time last night. This morning we noticed the the circuit breaker had tripped. After a couple of retries to start, we confirmed that the heater is tripping the breaker. Water temperature was 55, and air temperature...

Here's something I have never seen before. Just opened our pool this week, and are working on balancing. TA was pretty high yesterday (140), so I wanted to bring it down some before trying to increase Ph. Yesterday I added 5lbs of Alkalinity Down, dissolving in water before adding to pool...

Last night I noticed the red light blinking on the SWG. It blinked for a while and eventually went back to solid green. I tested the water this morning. Pump was off all night, and I usually wait to test until pump has been running a couple of hours at least. But,its busy day here, so... I...

FC 8.5 CC 0 CH 200 TA 80 CYA 50 pH 7.8-8.2 (I have a hard time distinguishing the colors on this one.) I have turned down the SWG to get the FC down a bit. I am thinking I should add the stabilizer first, and then re-test the pH before adding muriatic acid. Is that correct? And, if I use...

I have been testing our water myself this year using TF-100, and I am reading my current CYA at around 60 (maybe 70, never quite sure of myself). Pool store tested our water today (because SWG indicated low on salt). They said CYA was at 83, and said that it was too high. Cautioned that...

Just started testing with TF 100 this year. Numbers have been perfect, although chlorine was running a little high in the 5-7 range. I set the SWG at 20% for 12 hours per day, and it was coming down slowly. This week, after some nice sunny days, pool was low and also needed to be back washed...

We have a 90" spillover spa (Latham/Performance Pool) that was installed with our pool a couple of years ago. I was looking through some of our documents and I see that it would have been possible to add at Haywood LED light, back when we bought the spa, but the installer never mentioned this...

Our pool was installed in fall of 2016. When we opened it this year, there was a good amount of rust on the rim of the light. (And maybe a little on the drain cover in the deep end also. Very faint brownish color starting to show). Installer came out and looked at the light. He said correct...

2nd year with our new pool. Followed your advice and decided to start testing for myself and bought TF 100. (HS Chemistry wasn't that bad, after all.) So after a few goes, I think I have the testing down. And, I just want to double check my plan. Pool company opened the pool a couple of weeks...

New pool owner. Trying to figure out how to balance the water without going to the pool store. Using Aquachek 7 test strips. 2 inches of rain yesterday. Pool filled to the top, and we drained in down to where it should be. Tested the water. Total Hardness: 500 TC: 1 FC: 0.5 PH: 7.2 TA: 80...

New pool owner. Since day one, spa has drained to pool level when pump is off. Initially, contractor forgot to install a check valve (Yes, seriously). Told me, just run the 24 hours a day. (Again, I think, seriously?) After a month of trying to fix this with my contrator, I am coming to...

We just put in a new pool with attached spillover spa. First time owners, so we are on a big learning curve. When the pump is off, the spa drains to pool level. Did some research on my own and learned this is likely a problem with the check valve. I called the contractor and he said that he...