In my opinion, YES it makes sense. CYA has pros and cons for outdoor pools alone. CYA creates longevity in the chlorine's sanitation process, but greatly depletes the ORP.
With an indoor pool, you can expect to see high use especially during the hot summer months. Along with sanitation, you need the maximum ORP to keep your pool clean and clear. Augmenting with a shock can be costly and shut down your indoor facility for many hours, most likely days until you have reached a safe chlorine residual.
As noted in the AFO Manual, "..the indoor use of cyanuric acid or stabilized chlorine products is inappropriate. CYA serves to reduce substantially the loss of chlorine residual due to ultraviolet radiation from the sun; there's none of that indoors." Williams, Kent (Aquatic Facility Operator Handbook) Virginia, NRPA 2006
Another factor, CYA can be expensive! Getting it in and getting it out.
For those looking for that part of the MAHC http://www.cdc.gov/healthywater/pdf/swimming/pools/mahc/structure-c... 188.8.131.52.1.1
The MAHC committee members dealing with the code proposal covering CYA are on target. It is helpful to go back to 1997 where Kent Williams' PPOA Pumproom Press technical article titled Cyanurics ~ Benefactor or bomb? states, "REGARDING INDOOR USE OF CYA: It must be emphasized here that the indoor-pool use of cyanuric acid or stabilized chlorine products is wholly inappropriate." He elaborates in the article found here; http://ppoa.org/pdfs/PrP_Cyanurics - Benefactor or Bomb.pdf.
If you are using Cyanuric Acid, or considering trying it in or out of doors, this article is a must read. For that matter, it is a must read for all AFO, CPO, AquaTech or otherwise pool and spa tech types out there. If this link does not work, simply go to http://ppoa.org and click on the Tech Articles tab, then scroll down to Articles in PDF Format. Plan for more than one potty break with this one. It's worth it! RB
That will do it!
Great article, thanks! Quite a bit of his article is also in the AFO manual. I wonder the manual copied it from......hmmmm. :)
It might be because Kent wrote most of the AFO manual.
Stephen ...... I was being sarcastic..... Just some forum humor.
Jesse and Robert ... Thank you for sharing your thoughts. The links to the MAHC and the article by Mr. Kent Williams are great resources!
Welcome KK! Kent's PPOA is a super resource in all areas of pool operations, especially technical applications as you well know. Operators, you receive his complete library of Pumproom Press Newsletters by joining the organization. See http://ppoa.org/?page_id=7 for details and to link to the membership page.
If you haven't already, take a look at the comments attached to this article in Pool & Spa News; New Code Proposes CYA Restriction, http://poolspanews.com/2012/051/051n_cya.html