Algae problem

[amelito]

I have been fighting an algea problem for the last five days. I have added 5 bages of ganual shock over the last 3 days to no avail. It doesn't seem to be getting better but it's not getting an worse. My numbers are...

FC 7
PH 7.8
Alk 160
CYA 40
CC 4.5
TC 11.5+

Any suggestions?

 

[johnfromphilly]

I have been fighting an algea problem for the last five days. I have added 5 bages of ganual shock over the last 3 days to no avail. It doesn't seem to be getting better but it's not getting an worse. My numbers are...

FC 7
PH 7.8
Alk 160
CYA 40
CC 4.5
TC 11.5+

Any suggestions?

I am not a pro but the Pool School (link on top right of this page ) is the place to go so you can learn about everything related to keeping your pool balanced. This article is in there:http://www.troublefreepool.com/pool-school/defeating_algae

Getting your pool to shock level will also get rid of those CC's which should not be above .5
You should read and reread the pool school and you will learn alot- just like I did. Things like "shock is a level of chlorine not a product"

 

[Butterfly]

Hi,

We suggest you use Liquid Chlorine or Bleach (plain, unscented 6%) to shock your pool.

Remember that shocking your pool is a process and not a one-time event. The more often you can raise your pool to shock level (and try to hold it there) the faster the process will go.

With CC at 4.5, you will need lots of bleach.

Have you added anything other than the bags of shock?

Have you used the Pool Calculator?

 

[amelito]

I haven't added anything else. I have been using bleach all summer and things were going well. I will go back to bleach tonight and hit it heavy.

Once the algea is beaten will my CC level once again drop near zero?

 

[amelito]

John I guess you answered my question about the CC level, thanks for the advice on the article. Believe it or not I just read it last night I had printed it out earlier in the season.

 

[amelito]

According to the pool calculator I would need to add 16.4 gallons of 6% bleach to raise my numbers to shock level, does that sound about right? That seems like a lot of bleach to me.

My target shock level is 15 according to the chart.

 

[Bama Rambler]

I just ran the PC and starting at a zero FC level I only get that you need to add just under 5 gallons to get to 15 FC. I don't know how you got to 16-1/2 gallons but I'd run the numbers through PC again.

 

[JohnT]

According to the pool calculator I would need to add 16.4 gallons of 6% bleach to raise my numbers to shock level, does that sound about right? That seems like a lot of bleach to me.

My target shock level is 15 according to the chart.

I get a little over 5 gallons using the Pool Calculator. Rough figuring makes that seem right, since one gallon of 6% will raise 10,000 gallons by 6ppm. In your pool, one gallon of 6% will raise 20,000 gallons by 3ppm, so 5 gallons of 6% will raise 20,000 gallons by 15ppm.

 

[amelito]

Thanks guys you're right don't know what I was thinking. Thanks again, you guys are great keep up the good work.