Yellow Algae and Pool Resurfacing

[pwcunning]

I have a 28000 in-ground Gunnite & Plaster pool and have been fighting yellow algea for the past year. Seems to appear, then I do the Yellow-Out treatment and it seems to disappear for a while but then reappears. Coincidentally (not related to the algae problem) I need to have my pool re-plastered. I am going with a company that doesnt simply do a plaster overlay, but blasts much of the existing plaster off as they can first first So I have a couple of questions -
1) Will the replaster solve my yellow algae problem?
2) Might a replaster before solving my algae problem make things worse by trapping algae spores deep within the new plaster surface making it harder to remove?
3) Is there anything I can do during the replaster process when there is no water in my pool to better help rid the pool of the yellow algae?

Thanks in advance for any advice.

 

[tim5055]

1) Will the replaster solve my yellow algae problem? Maybe, see below
2) Might a replaster before solving my algae problem make things worse by trapping algae spores deep within the new plaster surface making it harder to remove? Doubtful
3) Is there anything I can do during the replaster process when there is no water in my pool to better help rid the pool of the yellow algae? Not really

Thanks in advance for any advice.

Ongoing algae issues are due to ongoing chemical imbalance in your pool. The "yellow out" you have been using is a band aid and knocks the algae back, but never eradicates it.

I'm going to guess you normally have 3" pucks in a floater in your pool supplying chlorine and shock the pool each weekend like the pool store wants you to. Both of these can be very bad practices.

We base our pool care system on accurate testing and only adding what the pool needs, when it needs it. To do that you need your own accurate test kit.

To effectively practice the TFPC methods, the FAS/DPD chlorine test is essential. The kits sold at the pool store generally won't won't cut it, but be careful pool store employees are known to say “it's the same thing”. Generally it's not!

The differences are in the size/amount of reagent bottles included with the kits. All of them use the same Taylor Technologies chemicals.

I recommend the TF100 as it was designed for residential use and has more of what we do use and less or none of what we don't use often.

The only other real option for a test kit is a Taylor K-2006. Be careful comparing prices because the K-2006 comes in sizes, designated by a letter. The basic K-2006 has .75oz bottles. You need to get the K-2006-C to get the larger bottles that you want. Even then it is a little short on the reagent & powder for the FAS/DPD test.

How much Pool School have you read? Start with these:
ABCs of Water Chemistry
Recommended Pool Chemicals
How to Chlorinate Your Pool

So, welcome to TFP!!

 

[pwcunning]

Tim
thanks you for your reply. You are exactly right. I do use the 3inch pucks and shock the pool (about) weekly. However I also DO test my pool weekly with a Taylor K-2006 test kit.
Used to use another test kit which was not as comprehensive as the Taylor kit but started using the Taylor kit last year when the yellow algae problem started. Everything has looked good except the CYA which I attributed to over-chlorination with the pucks in addition to shock when trying to get rid of the algae. I understood that high CYA could make my chlorine less effective so I pumped out and replaced a lot of water to bring CYA back down to around 30 to 40. Thought my algae problem was solved but summer rolled around and lo and behold, more algae. Everything on the Taylor test kit indicates perfect balance. So ive learned, as you said, that the yellow-out just knocks the algae back. How do I get rid of it once and for all? And will the replaster help?
Thanks!