My beautiful green swamp that has turned yellow

[danacc]

Ok, now I'm confused. The OP said they are adding what PoolCalculator says to add to get up to shock level according to the CYA in the pool. An hour later, the test shows lower chlorine levels. I thought that was what happens with SLAMming when there's algae or something organic in the water. And continually adding bleach, waiting for it to mix (which also let's it oxidize and get used up), re-testing and re-adding is what results in SLAMming eventually getting the water clear.

This seems to be what the SLAM process says to do--help me understand where I'm going wrong...

 

[pwrstrk]

You are correct.


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[mdb_007]

Keep the faith, you're on the right track!

Nope. OP is not following the SLAM process but rather adding too ittle chlorine to do much, if any, good.

so what am I doing wrong if I test, calculate, add recommended amount, hour later test calculate add recommended amount?

 

[pwrstrk]

Are maintaining the shock level ? That means when you test the FC and its below shock level you bring it back up to shock level.


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[Charlie_R]

I don't think you are wrong in what you are doing, just your assumptions about "there should be more FC left after only an hour". When you have a green pool, FC WILL get used up in a hurry.

 

[mdb_007]

Are maintaining the shock level ? That means when you test the FC and its below shock level you bring it back up to shock level.


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I havent been able to get it to the shock level yet, I keep testing and adding the recommended amount, I have already added about 25 gallons of 7.24% bleach in total

 

[Charlie_R]

It could be you have more water volume than you put into the pool calculator. If you are keeping a log of what you are doing, increase your dosage until you get the desired results.

 

[pwrstrk]

How do you know it never got to shock level ? If you have something eating the chlorine up it won't stay at shock level long.

7.24% bleach ? I've never seen that percent.


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[mdb_007]

Sorry typo 7.86%.

The bleach is 8.25% but only 7.86 % is available chlorine.

 

[pwrstrk]

Ok we're splitting hair.

Just a joke !!


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[mdb_007]

so once the CC is zero, will the FC start rising drastically?

 

[Charlie_R]

Your FC will start to hold more as the algae is killed off, as long as you are following the SLAM guidelines. Your CC will initially climb, then start dropping for the same reason.

It may seem like a gradual process, so keep a log of everything you do.

Pics for your own use will also let you know of the progress.

 

[linen]

It might be helpful if you post your next few test results (just FC and CC) and how much chlorine you put in as a result.

 

[techguy]

It seems like are trying to "pass another car" (kill algae) by going 2 mph faster than the other car who is accelerating (algae growing). You need more gas(chlorine) to get this guy(algae) in your mirror. If you add too little chlorine, you will drag this out longer.

Pardon me if I read this tread wrong, I am late to the party.

 

[Butterfly]

It might be helpful if you post your next few test results (just FC and CC) and how much chlorine you put in as a result.

Yes, this will help us confirm where you are in the SLAM process.

 

[mdb_007]

here is what I have so far
for the last addition I added double the amount just to try and get it up to 13 ppm

Time..................FC...................CC..................AMT ADDED

9 PM..................2.....................1....................2.5 gal

10 PM................6.5..................1....................none, realized I was out of bleach, ran to the store

11 PM................5.....................1....................2.5 gal

4 AM..................2.5..................1....................3 gal

5 AM..................11...................1....................2 quarts and 1 pint

6 AM..................11.5................1....................1 quart and 3 cups

7 AM..................9.5..................1....................2 gal, pool calculator said add 1 gal

 

[karmabiker]

Pool calculator is used for the maintenance of a clean sparkly pool.

You need to SLAM (link here:http://www.troublefreepool.com/pool-school/shocking_your_pool) your pool.

The FC you are adding is doing its job (killing algae) you just need a lot more of it - as outlined in the SLAM process.

 

[mdb_007]

just tested and fc is 14 and cc 1.5 !
let's hope I can keep it around that!

 

[karmabiker]

If that's your slam level and you are having issues getting there aim higher.

16 or 17 won't hurt



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[harleysilo]

I was disappointed not to find pictures of a yellow pool!

I think part of your initial difficulties were your Combined Chlorine level of 10 PPM, that is really high!