CYA at 90ppm

[unixfreak]

Time to start draining water?

23,000 gallons
CL -10+
TA-110
PH - 7.2
CH - 120
CYA - 90

The pool is green. Thanks trichlor pucks!

 

[Patrick_B]

Yep, if you can. That would make it work much faster. Not that practical otherwise.

 

[linen]

How did you test for cya? If it is truly that high, like Brushpup said, I too would recommend lowering it before the SLAM process.

 

[jblizzle]

How did you obtain those test results? Did you not get a kit with the FAS-DPD chlorine test?

If not, you will need to add it to accurately perform the SLAM process ... http://tftestkits.net/FAS-DPD-Chlorine- ... t-p47.html

 

[unixfreak]

I used the TF-100 test. Draining has commenced. Any issues with an above ground pool liner. Pool calculator says drain 53%.

 

[jblizzle]

Why did you not report the FC and CC then and instead just said 10+ Cl?

Regardless, you should replace 50-60% of the water to lower the CYA. As long as you keep at least a foot of water in the pool everywhere, you should not have any issues with the drain/refill.

 

[unixfreak]

Why did you not report the FC and CC then and instead just said 10+ Cl?

Regardless, you should replace 50-60% of the water to lower the CYA. As long as you keep at least a foot of water in the pool everywhere, you should not have any issues with the drain/refill.

Sorry ... The FC is 16.5 and the CC is 1.

 

[Patrick_B]

This will be an easy one after the refill.

 

[unixfreak]

This will be an easy one after the refill.

That's good to hear. I started out with a swamp after opening the pool up months ago. I worked it and it was crystal clear. I made my fatal mistake in not monitoring the CYA and kept adding pucks of triclor a couple of times a week and only monitoring the chlorine and PH

Live and learn. This was my first year of maintaining a pool.

 

[duraleigh]

All of us started at the same point.....knowing next to nothing about pools.

I have been doing this for pretty close to seven years and I still learn something new from this forum almost everyday.

 

[unixfreak]

All of us started at the same point.....knowing next to nothing about pools.

I have been doing this for pretty close to seven years and I still learn something new from this forum almost everyday.

This site is amazing. I have learned a ton and of course still have a lot to learn. It's funny to hear co-workers that say, " ah just keep the chlorine and PH and you don't have to worry about anything else." These are the folks that I used to think knew a good bit about pools.

As for the previous statement that I made saying, "thanks trichlor" .... I can't blame the trichlor .... I put it in!!

 

[Patrick_B]

Well, pH and Free Chlorine are extremely important, but there is more to it. Understanding the FC relationship to CYA is critical. Many if not most well seasoned pool owners seldom do.

 

[unixfreak]

Well I drained half of the pool and now I'm filling it. Time to learn the SLAM process!

 

[Patrick_B]

It's kind of fun actually. Not hauling the bleach, but seeing a mess turn into pristine clear water. That is the fun part.

 

[unixfreak]

I agree. When I opened the pool before summer, it was a green swamp with tadpoles to boot. Seeing it go from green to milky ... to clear was fun to watch. I had hardly any CYA and for some reason thought that I could add those pucks occasionally and be ok after pump to waste when vacuuming and rain ....etc. I was wrong. I will stick to the BBB method. Now I can see the relationship of cya and FC, CC. My free chlorine was only half what was needed with that high CYA.

 

[unixfreak]

50% of the water was replaced and here are the numbers:

PH -7.5
TA -60
CYA - 40 :-D
FC - 9
CC - 0
CH - 100

To get shock FC up to 16, I added 16 oz of 63% Cal-hypo.... and swept the pool.
Does it look like I'm on track?

 

[duraleigh]

Does it look like I'm on track?

Absolutely! Nice work on the CYA.

Now, keep your FC up close to 16 ppm by testing and then redosing back up.

 

[unixfreak]

We're getting there .....
Late last night I measured FC and CC:
FC: 19.5
CC: .5

This morning's numbers:
FC: 16
CC: 0
CYA: 40
PH: 7.5
CH - 100
TA: 60

So I dropped 3.5ppm FC overnight. I'll raise my FC to 20 so hopefully I won't drop below 16 by the end of the day.

 

[jblizzle]

No need to test anything but the FC and CC at this point. Looks like you are getting of top of this

 

[Patrick_B]

Yep, good job there. Keep SLAMing and you be there.