Pool opening, water is green, what shall I throw in there?

[vaindioux]

Hi

I removed cover and net and as expected my pool water is green. All is ready to go but I would like to know what chemical I need to throw in there to kill that green stuff, prior to start the filter.

Thanks a lot

Pat

 

[northrn]

Aw, Pat. Don't just throw a bunch of stuff in your pool. That's just asking for trouble.

Get everything up and running for a couple of hours and then use that Taylor test kit you have and post up a full set of numbers. You already know if you see green, you need to follow the SLAM procedure.

Oh, and post up pictures for my entertainment please. Good luck!

 

[aeh0603]

I'm new to this, but I'm sure the experts will chime in soon. It sounds like you will need to SLAM your pool to get rid of the algae. Here is a link on how to do it. Pool School - SLAM - Shock Level And Maintain I see in your signature that you have the Taylor k2006 test kit, can you post some current test results? Your test results will help the experts to give you better advice.

 

[vaindioux]

Hi

Ok the filter has been running for a couple of hours so I tested.

-There is no chlorine in the pool, level after testing is 0.
-PH is a little high at 7.8, I hope this level is ok to go on with the slam.
-CYA level is 60PPM

I won't do anything else until the experts answer.

Thanks to all

Pat

 

[Texas Splash]

From one Pat to another ... hello! Yes, I foresee a SLAM in your future. I also think you should review the Pool School - Opening Your Winterized Above Ground Pool page just to ensure you haven't forgotten anything important from the winterization process. IT's good you still have CYA. It's a bit high which will require more bleach, but that's okay. You'll need to reduce the pH before starting the SLAM. Shoot for a target of 7.2-7.5 with acid first, then raise your FC to 24 and most importantly ... "maintain" that FC of 24 until you pass all 3 SLAM criteria. Read everything on the SLAM page and you'll do just fine. If you have any questions, please let us know.

 

[robdac]

Knowledge. You need to throw some knowledge in there. Start reading Pool School.

 

[vaindioux]

OK I read the article on opening the pool, I didn't miss much on my own beside testing TA which I will do now.
SoI need to lower my PH, what is this acid you mention to lower it? Can I buy it at lowes or home depot?
About the chlorine which needs to be at 24. Do I start adding the chlorine tablets I have one at a time while testing daily until I reach 24?

Thanks so much

Pat

 

[Texas Splash]

Yes, muriatic acid like one of these (notice the 31.45% strength):




Or from your local pool store.

For chlorine, use regular liquid bleach from your local grocery store. No pool store tablets or pucks as they will distort other levels (CYA). Regular bleach (generic is fine) is the BEST. Make sure it is NOT splashless or contains any scents.

 

[vaindioux]

Texas

Thanks so much for the quick and detailed reply. Going to store tomorrow to buy it all and will add to pool.

Patrick

 

[triptyx]

Careful with the chlorine tablets. They'll likely add even more CYA to what you already have. Liquid Bleach is the way to go (basic concentrated bleach, no "no splash", no scents, no other additives)!

 

[vaindioux]

raise your FC to 24 and most importantly ... "maintain" that FC of 24 until you pass all 3 SLAM criteria. Read everything on the SLAM page and you'll do just fine. If you have any questions, please let us know.

Ok here is one more question. I don't understand how to raise the FC to 24? What is that 24? On the TFP poolmath calculator it says you can target 2-6.
I got the PH figured out.

Sorry for the stupid question

Thanks

Pat

 

[razor]

No stupid questions here. Do you have a Taylor Test kit? The people here like the TF-100.


Sent from my iPhone using Tapatalk

 

[triptyx]

The reason you're going to raise FC (Free Chlorine - which you can test with your Taylor kit) to 24 is to SLAM the pool. A correctly executed SLAM will get rid of your green water problem.

You can read about SLAM here: Pool School - SLAM - Shock Level And Maintain
Read about correct chlorination (and other chemicals) here: Pool School - Recommended Pool Chemicals

 

[MarianParoo]

Just enter your current FC and then 24 as your goal FC in PoolMath. It will tell you how much of what type of chlorine to add.

 

[kcindc]

Pool Math has default amounts listed. You put in your current levels and then you change your target FC to 24 which will tell you how much bleach to add to reach your target of 24.

Pour the bleach slowing in front of a return. Brush your pool and retest your FC in 30 minutes, put in the new FC amount and keep the target FC at 24. Add the required amount of bleach to reach your target of 24.

As your pool holds FC longer, you can increase the time between testing and adding bleach. Don't bother testing anything other than FC for now.

 

[vaindioux]

Thanks so much to all.
Marianparoo and kcindc I got it now. I entered 0 and 24 and it gave me 160oz of bleach.
I will keep you posted how it goes.

Thanks again ?

Pat

 

[vaindioux]

Hi

Just to update this thread. It's going good so far.
PH has been lowered to 7.3
FC is at 23.2 goal is 24 (On my way to adjust this)

Pat

 

[Texas Splash]

Very good. And remember, while your FC is so high (over 10), no need to test pH. It will be off (High). Save your red reagent.

 

[MarianParoo]

We like updates! Don't be afraid to go a tad over on the FC. It's better than a tad under.

 

[vaindioux]

Thanks for the nice posts guys!
One more question. So I keep this 24 FC number going for how long? Until the pool clears? When do I start testing for CC? When do I do that FC loss test?
Ok that was 4 questions, I apologize

Thanks again

Pat