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Turns out…. The tech sent to replenish the chemicals has been adding a big dose of acid to the pool at the same time. When all else fails, check for the obvious but illogical actions hiding in plain site. The company is going to re-emphasize to its techs to let their system do the work. What...

No spillover or bubbler. Only the submerged auto vac (Barracuda). The device’s target range is 7.5 to 7.8. It is overshooting on the low side. TA is in the 80 to 100 range last time I checked. With this device I do not add anything. The device does the work. (see CUA Pools | Pool Service...

I attach 2 photos from the device I have had installed which automatically measures Chlorine and pH levels and injects muriatic acid and liquid coloring as required. The chlorine levels stay nice and even but the pH levels are cycling as shown in its monthly view. The supplier of the device...

Post in thread 'Calcium Nodules in pools' Calcium Nodules in pools I posted in what turned out to be an active thread so rather than reposting it I linked to it. The same photo is attached here.

Moved from here. Would this that has recently appeared on my pool be this issue? The pool was replastered in May, 2015. I just had my pool deck resurfaced with polyaspartic and paint chips, which got into the pool and circulated into the cartridge filter. It took several hours to mostly clean...

I just posted my success story with this product and a lot of elbow grease. I couldn’t get the chlorine level high enough and this stuff did the trick. BioGuard Spot Kill Black Algae Killer for White Plaster Pools 2 lb

Having struggled with black algae for about 3 seasons I finally found a combination of ultra shock and elbow grease which appears to have cleared it completely. I am not promoting the brand. I am just reporting my success, having been frustrated with the constant brushing and traditional shock...

My in-ground pool has a thermostat which automatically turns on the pump if the outside air temp drops below a pre-set temp. Currently the unit is set to 34 degrees and tonight here in DFW it is so far about 9 degrees, with this major artic cold snap. The pump has run continuously for several...

In DFW, 8.25% is gone. 10% at Walmart, Home Depot, Lowes - the stock is MONTHs old (3-5). Useless. They don't turn enough, apparently, to keep the stock rotating. I'm stuck. Looking for something - anything - around here in Dallas/Fort Worth that isn't just the same thing but a price gouge...

I have been buying 8.25% concentrated bleach from WalMart or Dollar General since joining this site almost 5 years ago. Under $3. Suddenly they are calling their Concentrated bleach the 6% and not even listing the standard concentration on the others. Cannot find 8% any more. Anyone else...

I believe I had some bad information about that (from a pool professional) and in fact there is a lot of misinformation out there about this. My apologies for any confusion. I am still looking for some additional data about this.

It only cost me $75 extra on the water bill to drain and fill a similar size pool in a nearby area to you. At some point that is the best option to solve all kinds of chemical imbalances. Just get a clean start. Our half drain and fill for similar reasons wound up a waste of time and money.

Thanks for this post! I just placed my order and so do not have to go get some next week.

I added a gallon, checked, it was about 8, then added another half gallon, checked and it had overshot. Today's numbers: FC 4.0 CC 0.5 TC 4.5 TA 50 pH 7.2 CYA still about 30. I still need to add about 3 to 4 pounds of baking soda to bring up the TA enough per the pool calculator.

Tested just now: FC = 8 CC = .5 TC = 8.5 TA = 30 (Baking Soda - off to the pool calculator) CH = 390 (up from 300 last check) pH = 6.8 (at least now I can let it rise slowly instead of being so high we could not measure it)

Bought the SpeedStir through here (the companion site where I got my advanced test kit). My results are what I posted. I did add Muriatic last night and will check the values again tonight after work and post if they still look funky. The water looks much better once I got the pH down, so...

Amazon.com: PoolRX (What is PoolRX). The pool refurbish company uses them and it has reduced their chlorine demand dramatically even for large commercial pools. I'm in charge now. They finished their part though I could probably argue that point a bit until the pH is proper. Yes, I have...

We have a newly-renovated pool just in the last phases of after-care from new plaster, tile & coping, and Dec-O-Seal. With the amount of rain we have had in the DFW Metroplex during this process, little wonder the water's chemistry is a bit off. Today the pool company came by and noted the...

Here are my TF Test Kit #s for the last 2 weeks. Any concerns to note? April 13, 2014 FC 4.5 CC 0.5 TC 5.0 TA 80 CH 190 CYA 37 pH 7.6 (Added 1/2 gal Muriatic acid) April 26, 2014 FC 4.5 CC 0.0 TC 4.5 TA 60 CH 220 CYA 28 pH 7.2-ish

FC last night was 15 ppm; CC .5 ppm, TC 15.5. This morning, FC was 14 ppm; CC was 0, and TC was therefore 14 ppm. The water looks somewhat better. Pump ran all night. I am going to re-test tonight as well.

Did you measure your CH /w a speed stir? I don't yet have a speed stir but I have repeated the test a few times close together so I have good confidence with the #s and my swirl method is pretty much like it was in chem lab by hand, back in the day. I'm in the SLAM mode and will do the OCLT...

Checking all these numbers....this shows my min/max/shock level for 40 CYA: CYA (Stabilizer):40 Minimum FC:3 Target FC:5 Shock FC:16 Pool Calculator shows this for current #s and conditions, to raise CH (sanity check): CH current 140 Goal: 250 Add 265 oz by weight or 212 oz by volume of...

After my total water replacement I have continued to adjust the water chemistry. Right now my concern is a fairly sudden onset of reduced water clarity compared to when the water was new a few weeks ago. Have kept the FC at 3 or better. OCLT is .5 ppm and will check tonight again. Cartridge...

Tell me if my thinking is valid or wrong... My pool is low on calcium and CYA. It needs chlorine. At this point Trichlor tabs, which have all of what I need, should not be a problem to use until the levels come up, at which point back to liquid chlorine for maintenance?

FC: 2.5 ppm (heavy rain last 24 hours in DFW; Yay!) CC: 0 TC: 2.5 ppm TA: 60 CYA: Still <20 but closer to 20 than previously observed from what I could tell. CH: 100 pH: 7.2 I have neglected to mention - this pool was inspected in May and found to be about 1" off level. One can indeed see...

If the leak is high up the water level such as the skimmer is that enough to deplete the CYA as it passes into the skimmer pump suction line? I am going to look at the skimmer mouth area problem tomorrow or as soon as the rain (yay!) stops and test that area first for leaks. Then I will test...

This morning: FC 4.5 CC 0 TC 4.5 TA re-test is 60, so I doubt last night's number is valid. >1" water loss just since last night (no bucket test yet; was dark) - no doubt that's excessive.