Mustard Algae

[Straightleg]

fc 0
cc 5
Cya 60
ph 7.4
ta 120

numbers seem good to me
Have not done anything all summer but add 1/2 gallon (bleach) or alittle less each day.

Only change recent was dropped my ph some

Water still clear, and we have had a hot spell lately



SL

Fixed it:
I typed wrong
My fc is 5
and my cc is o

[FormerBromineUser]

.
Here's a link to your old posts http://www.poolforum.com/pf2/search.php?searchid=48573

FC of 5 is too low for your CYA level anyway. CarlD will give you details

[Straightleg]

.
Here's a link to your old posts http://www.poolforum.com/pf2/search.php?searchid=48573

FC of 5 is too low for your CYA level anyway. CarlD will give you details

I cant get in to that link. I am locked out for some reason.
My book in the k-2006 says ideal numbers. I am at every one. They say don't let your CYA soar up, so I have been careful with that. Watermom told me to keep it between fc 3-6. I have done that all summer.
So now that you say this I am at a loss



SL

[CarlD]

OK.
Here's what I think happened: Your pH went in to the 8s, effectively shutting down most of your chlorine's ability to perform. (Somewhere we have a table or formula on that).
That allowed algae to form. The answer is STILL to take your FC up to 20ppm (using 5 121oz jugs of 8.25% bleach, instead of 7).

The only other possibility is that something else unrelated to chlorination is going on and it's not algae. But I don't think so.

[Straightleg]

OK.
Here's what I think happened: Your pH went in to the 8s, effectively shutting down most of your chlorine's ability to perform. (Somewhere we have a table or formula on that).
That allowed algae to form. The answer is STILL to take your FC up to 20ppm (using 5 121oz jugs of 8.25% bleach, instead of 7).

The only other possibility is that something else unrelated to chlorination is going on and it's not algae. But I don't think so.

Carl My ph has been 7.8 - 8.2 all summer, perfect water clarity. No algae

Algae showed up 2 days ago
I understand to get rid of the algae, I have to pour bleach on it to take my fc up.
I will shock and clean the pool

Then try a 8 to maintain it

[FormerBromineUser]

With a CYA of 50, you want to try and keep your chlorine between 3-6 all the time. Here is what to do. Each evening, test the chlorine. Add enough bleach to take your chlorine back up to 6ppm. The next evening, if you find that your chlorine has dipped below 3ppm, take it up to 7ppm when you dose with bleach. The goal is to find out how high you need to take it so that it never drops below the minimum by the next evening. You will soon learn your pool's pattern.

In case you need the Best Guess Chart again, it is here: http://pool9.net/cl-cya/

I think this is the post to which you were referring. Your CYA is now 60 so you need to bump up WaterMom's original minimum recommendation for maintenance.

HOWEVER, you now have algae. CarlD will advise you what to do but in the meantime, reread the Best Guess chart linked above.

Sorry, Carl. We posted at the same time....

[Watermom]

Here is your thread where we helped you get the chemistry going. http://www.poolforum.com/pf2/showthr...ars?highlight=

This is the one about your pool pump hating you! http://www.poolforum.com/pf2/showthr...-me?highlight=

Please let me know if you cannot access these links.

[Watermom]

Do your pool walls and floor feel slippery at all? Any chance that it is dirt/pollen/etc?

Go ahead and take your chlorine up to 20ppm as Carl suggested above and while the chlorine is high, brush the pool.

You don't want to keep your pH at 8ppm. Honestly, that is not the thing that will keep you algae free.

[Straightleg]

Do your pool walls and floor feel slippery at all? Any chance that it is dirt/pollen/etc?

Go ahead and take your chlorine up to 20ppm as Carl suggested above and while the chlorine is high, brush the pool.

You don't want to keep your pH at 8ppm. Honestly, that is not the thing that will keep you algae free.

Maybe it is pollen. Everyone has been sneezing lately
When I say 8, I mean my fc...instead of 5...that ok

[Watermom]

Ok. I thought you meant pH of 8. My bad.

If everyone is sneezing, I bet it is pollen. I just did a google search for 'pollen counts southern ohio' and found a page on the Weather Channel's website that lists it for various cities in the state. I didn't know what city you were in so I just put Cincinnati in and it said moderate to high.

You can try it. Here is the link. http://www.weather.com/outlook/healt...drilldown/ohio
Then, just click on the first letter of your city's name and you'll be able to find the pollen forecast for your area.

But, having said that, still feel the floor the next time you are in the pool and see if you note any slipperiness.

Hope this helps.