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+1 on what everyone else said on OCLT and performing another CYA test.

You have been flirting with the minimums recently and dipped significantly below one, so hopefully nothing is brewing but if it is it should be a quick SLAM.
Hopefully its low CYA and that is the perfect opportunity to raise it with your pucks while helping to maintain your FC.
 
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GREAT. Get 10 CYA hanging in a sock in front a return and it will shake/smush out in a couple hours. I let mine go longer (24 hours) versus shorter because I can't be bothered to only have half of it ready to dissolve.
 
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Newdude said:
GREAT. Get 10 CYA hanging in a sock in front a return and it will shake/smush out in a couple hours. I let mine go longer (24 hours) versus shorter because I can't be bothered to only have half of it ready to dissolve.
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I do not own any CYA but have 50lbs of trichlor pucks sitting in the garage. I will add one to my robot skimmer.
 
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Ok. Each puck adds about 3ppm. It'll take a minute to bump but so long as the FC is above min, there's no harm.
 
Maldravus said:
I do not own any CYA but have 50lbs of trichlor pucks sitting in the garage. I will add one to my robot skimmer.
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Each 3 inch puck (8oz) will add CYA 3ppm and FC 4.9ppm and lower pH 0.3
This is fully dissolved - so you need to add at least 3 pucks to get a change of 10ppm in CYA.
Also, do not do an OCLT if pucks are in the pool.
I assume you add the puck to the basket of the robot skimmer? It is best to buy a floating puck dispenser if you want to add multiple pucks.
Most robots are plastic but obviously there are some metal parts. I would be concerned of that chlorine/acid soup sitting in the skimmer basket. Just my opinion.
 
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+1. Puck floaters are $14 and robots are a wee bit more than that. I don't see any reward worth filling the robot with dissolving acid.
 
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HermanTX said:
Each 3 inch puck (8oz) will add CYA 3ppm and FC 4.9ppm and lower pH 0.3
This is fully dissolved - so you need to add at least 3 pucks to get a change of 10ppm in CYA.
Also, do not do an OCLT if pucks are in the pool.
I assume you add the puck to the basket of the robot skimmer? It is best to buy a floating puck dispenser if you want to add multiple pucks.
Most robots are plastic but obviously there are some metal parts. I would be concerned of that chlorine/acid soup sitting in the skimmer basket. Just my opinion.
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I don’t have room in the robot to add 3 pucks at once. At least not in the specially designed puck holder, it only holds one. I have not kept pucks in the pool at all so the OCLT was done with none in there.
 
I just dosed with a full gallon of LC. I pulled the robot skimmer to do my daily pool robot vacuum but will add the skimmer and puck back once done. At this point it doesn’t seem to matter. Seems I’m resigned to burning through a bottle of LC every 2 days, in other words $2.83/day in LC. I’m failing to see any cost savings here, quite the opposite, but the pool does look nice.
 

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Maldravus said:
don’t have room in the robot to add 3 pucks at once
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That would be 14pointsomething FC anyway and depending how quickly they dissolve, too much at once.

One at a time is fine.
Maldravus said:
I’m failing to see any cost savings here, quite the opposite
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Let's see if the CYA drops the daily demand.

Either way, it's up to you to decide if you'd rather be proactive on TFP with an ounce of prevention, or go the pool store way that requires a pound of cure.
 
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So FWIW I seem to be back on the "Add a half gallon of LC a day" plan. The puck finally dissolved in the robot. I just clocked in at 5.5ppm FC and Pool Math suggested 51oz of LC to bring it to 9ppm. I added 62oz and fully expect that my FC will be back down in the 5 range tomorrow morning. I guess this just is what it is? I know, I know...SWG. We are looking for a reputable company. LC does not seem to be saving me any money from what I can tell.
 
One puck only added 3 (?) CYA. You needed 10 and maybe even 20. We would have our answer if you added straight CYA but you wanted to use some pucks. It's totally ok but slow. :)
 
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Newdude said:
One puck only added 3 (?) CYA. You needed 10 and maybe even 20. We would have our answer if you added straight CYA but you wanted to use some pucks. It's totally ok but slow. :)
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Yeah I am not buying CYA when I have a 50lb bucket of tablets that I will likely never use, heh. Ok, I will float another puck. So the idea is to take it from 60-70 CYA?
 
Maldravus said:
Yeah I am not buying CYA when I have a 50lb bucket of tablets that I will likely never use, heh
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I agree. But if you do it the slow way, have a big glass of patience while you wait. :)


Maldravus said:
will float another puck. So the idea is to take it from 60-70 CYA?
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Add 10 CYA total (2 to 3 more pucks.... as long as it takes) and road test that daily loss. If its still higher, add another 10 and road test that.

Consider buying the CYA standard from tftestkits so you can compare what 50 is supposed to look like. I have a feeling yours is lower and the subjectivity is playing tricks on you.
 
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Look at it as a good thing. Remember when we said to not get rid of your pucks, now you get to use some of them and lessen your liquid chlorine demand for a few weeks. Also note when the water warms up in the heat of summer, your CYA will degrade a bit and will probably need repleneshing. If you have any trips planned this summer, it would be a good time to do that.

Note if you buy a chlorine pool floater, they can hold more than one puck. They are usually around $10, but I got this fancy one from amazon with lights for $20. Its gives off just enough light for our blinding dog to be able to see and not fall into the pool at his 3am bathroom break.
 
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Maldravus said:
So FWIW I seem to be back on the "Add a half gallon of LC a day" plan. The puck finally dissolved in the robot. I just clocked in at 5.5ppm FC and Pool Math suggested 51oz of LC to bring it to 9ppm. I added 62oz and fully expect that my FC will be back down in the 5 range tomorrow morning. I guess this just is what it is? I know, I know...SWG. We are looking for a reputable company. LC does not seem to be saving me any money from what I can tell.
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I went back several years (2021 & 22) in my Pool Math app to a time before my SWCG was installed. I had a slightly larger volume (14k) but it is partly shaded in early morning and late afternoon. In April I was putting in 64 oz a day. I put 32oz in morning and then added another 32 oz in afternoon. My CYA was 50 and I did increase to 60 but temperatures also increased.

So based on my pool in comparison to yours, the usage is similar. Increasing CYA to 60 or even 70 will help if your pool if in full sun most all day.

It is clear you want to use your pucks but I had a bucket of pucks for over 4 years and only used when I went on vacation or in the winter months when the SWCG was turned off for a couple of months.

If you should decide to try stabilizer, 1 lb will raise your CYA by 11ppm in about 24-36 hours. Use the sock method to disperse in your pool.
 
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