Green Algae on tile under water and pool

[Hurricane Gio]

I found that I have some algae in the water. On the brought in-between the toes and the floor. My chlorine has been steady at 5.0 all winter and the water is balanced. PH around 7.5.

reasons? Prevention? How to get rid of it?

thanks

 

[jblizzle]

What is the full set of level?
Most importantly, what is the CYA level? Could be the 5 ppm is not high enough.

Probably time to start the shock process:
pool-school/shocking_your_pool

 

[Hurricane Gio]

I will post my full numbers on Friday. Water is very clear. I am getting bleach to shock as well on Friday morning.

Skip the algaecide stuff?

 

[jblizzle]

Skip the algaecide stuff?

Yes ... unless you want to spend more money ... and possible add undesirables into the pool like copper.

Bleach is all you need to clear the pool of algae. May want to lower the pH a bit before shocking.

 

[Butterfly]

+1 on Jason's comments.

We'll see your test numbers tomorrow

 

[Hurricane Gio]

Here you go:
FC: 3.0
pH 8.0
TA: 150
CH: 285
CYA: 30
Salt: 3600

So I assume I should get the pH and TA down today with acid and get my CYA up to 60.
Then shock the pool at 24 until the algae get beat.

I have not measured my Borates yet and will do on Sunday. Then add my ProTeam Supreme in.

 

[Melt In The Sun]

pH first, then shock. You can deal with TA later

 

[Hurricane Gio]

pH first, then shock. You can deal with TA later

Thanks. Pool calculator say 13 for shock?

 

[jblizzle]

[quote="Melt In The Sun":3t8qczpl]pH first, then shock. You can deal with TA later

Thanks. Pool calculator say 13 for shock?[/quote:3t8qczpl]

For a CYA of 30 ... FC 13ppm is the shock value to try to stay above.

When all is dead and clear you can bump up the CYA level.

 

[Hurricane Gio]

[quote="Melt In The Sun":3ckkmrcq]pH first, then shock. You can deal with TA later

Thanks. Pool calculator say 13 for shock?

For a CYA of 30 ... FC 13ppm is the shock value to try to stay above.

When all is dead and clear you can bump up the CYA level.[/quote:3ckkmrcq]

Ok. I just bought 5 large containers of bleach. Should I keep the CYA this low while socking? or bump it up ASAP?

I will start tonight.

 

[jblizzle]

I think 30 should be fine for shocking. Then you do not need as high a FC level to shock. And starting at night actually would allow the FC to only deal with the algae since the sun will not be out burning it off. Would not hurt to try to start when you can today and check the level a couple times before you go to bed and then check again first thing in the morning.

Just make sure you lower your pH before you start shocking because the measurement is off with FC >10.

When you go back to normal SWG maintenance you will want to raise the CYA.

 

[Hurricane Gio]

I think 30 should be fine for shocking. Then you do not need as high a FC level to shock. And starting at night actually would allow the FC to only deal with the algae since the sun will not be out burning it off. Would not hurt to try to start when you can today and check the level a couple times before you go to bed and then check again first thing in the morning.

Just make sure you lower your pH before you start shocking because the measurement is off with FC >10.

When you go back to normal SWG maintenance you will want to raise the CYA.

Thanks jason. I added the acid about an hour or go. I will some bleach now.

 

[jblizzle]

Check the pH now to be sure you are where you want to be. After you start adding bleach, you want to keep testing it and adding to keep it above 13. Otherwise you may be using more bleach than you would normally have too.

Run your pump 24/7 and watch your filter pressure.

Did you turn off your SWG? You can leave it on to help maintain the shock level, but remember to turn it off when you do the overnight loss test ... there have been a few times I have read where people we surprised that the FC went up over night :lol:

 

[Hurricane Gio]

Check the pH now to be sure you are where you want to be. After you start adding bleach, you want to keep testing it and adding to keep it above 13. Otherwise you may be using more bleach than you would normally have too.

Run your pump 24/7 and watch your filter pressure.

Did you turn off your SWG? You can leave it on to help maintain the shock level, but remember to turn it off when you do the overnight loss test ... there have been a few times I have read where people we surprised that the FC went up over night :lol:

SWG is on. I rather keep it on, so I don't forget to put it back on. I id that once last year, LOL!

 

[chem geek]

For prevention in the future, you might check your circulation in the area of the algae as it may be poor. Perhaps pointing the return in that area somewhat downward might help. I'm assuming it's not pollen.

 

[Hurricane Gio]

For prevention in the future, you might check your circulation in the area of the algae as it may be poor. Perhaps pointing the return in that area somewhat downward might help. I'm assuming it's not pollen.

Thanks. yes, its on the stairs mainly, which are reccessed.

 

[Hurricane Gio]

I now have like white bubbles/foam on top of the water. Too much bleach in the water?

 

[Butterfly]

Have you added any algaecide? They can cause foaming. Shocking will take care of it.

 

[Hurricane Gio]

Have you added any algaecide? They can cause foaming. Shocking will take care of it.

Nope, just shocking. FC is up to 18 and no CC(?). When I added the r-005 it stayed clear. Foaming is gone already.

How many days can it take for a very small outbreak?

Borates about 15 right now as well.

 

[Butterfly]

Have you added any algaecide? They can cause foaming. Shocking will take care of it.

Nope, just shocking. FC is up to 18 and no CC(?). When I added the r-005 it stayed clear. Foaming is gone already.

How many days can it take for a very small outbreak?

Borates about 15 right now as well.

How long? Well, as long as it takes! but, probably not long. Where are you in the shocking process? Have you done an OCLT yet? Remember to turn off the SWG when you do.

Once you complete the shock process (see red line in my sig) you can add your CYA.

Then, you can start knocking the TA down (per Pool School) before you add the borates.

How does the pool look? Can we see a pic?