timerguy
0
You REALLY need to get rid of that extra block (way bigger than a chip) on your shoulder.
You REALLY need to get rid of that extra block (way bigger than a chip) on your shoulder.
EqBob,
In order for us to assist you in this manor, we request test results from YOUR personal FAS/DPD based test kit. I can give some suggestions based on your test results from the pool store, but I wouldn't put any money on them being right......... A pH of 8+ is a MAJOR concern in a plaster pool. This can lead to scaling issues to your plastered pool and at no time should the pH be allowed to go above 7.8 for any reason.
Can you run a full set of tests using your personal test kit and repost here?
I wouldn't worry about your TA at this time. In will find it's "happy spot" as you adjust your pH levels. How often do you need to adjust your pH level?
Increasing your CYA can help you lower the % your SWCG is set at to help extend your cells life a bit. Start by bumping it up to 60 and see if you can reduce the workload some on your SWG.
As for the scaling and stuff on the floor. Can you describe the texture of these spots when you run your hands across them?
I've been testing about 2x a week and needing to adjust down by adding 1 quart Muriatic about once a week. When it goes up to 8, I've never had to acid drop test more than 2 drops, equating to approx. 1.15 quarts to bring it down.
I have been trying to keep it hanging out at the 7.6 to 7.8 range. I got a little low last night.
Is my assessment on CYA correct?
As a follow-up, took over from the pool maintenance guy about 2.5-3 months ago. Water was way outa whack. TA was 310 at the time. Got that down, then couldn't get FC to even register and Phosphates were through the roof (3500+). Got that taken care of and balanced and pool chemistry has been holding at these numbers for 6+ weeks and now there's the scale on the wall, splotches on the floor, and this white particulate hanging out on the spa bench.
Let's go one really quick last question for us to get more of an idea about your pool. Can you post a shot of the entire pool? Often we can tell alot if you're having issues with organics by the look of the water.
Was the scale, spolches and particulate there before you got things back in line?
If the TA was that high before you took over, it's likely that the pool pH was constantly climbing and staying at high (7.8+) levels. pH has the largest impact on CSI. High TA will constantly drive that pH upward with aeration. Couple that with the high TA itself and that's scaling conditions for sure. I would guess, unless you answer differently, that this scaling was there due to this high TA situation before you started getting things in line with where they were supposed to be. For instance, if you plug in your current numbers for in the one column of Pool Math and put the 310 TA with a pH of 7.8 in the other column with the same numbers otherwise, you can see that the CSI you have now is -0.29. Ok for pool plasters surfaces. However with a TA of 310 and a pH of even 7.8 (which was probably being let go even higher) the CSI is 0.69, definitely scaling conditions. If pH was at 8, CSI would have been 0.89... you see where this is going.
Thanks. I plan in adding the rest of the gallon in, in the morning. The bottle says it raises it 32ppm per 10,000 gallons so a full gallon should raise it about 26ppm for 12,000 gallons. That should bring it to right about the 70 mark you suggested. Pool math says I need waaaaay more than 1 gallon to raise it up. I suspect it is more accurate than the bottle? I'm doing the CYA addition slowly....going past it seems more problematic than not having enough.