How often do you pool people shock your pools? I hear people mention weekly,
but I can keep my free chlorine close to proper levels most of the time just
with my chlorine feeder and stabilized chlorine tablets. Occasionally, I'll
toss in some additional unstabilized chlorine if I notice the levels have
gone down to 1 ppm. As this dissipates over a day the feeder catches things
back up. I keep my stabilizer (cyanuric acid) level at around 40 - 50 ppm.
Is shocking something that must be done on a periodic basis to fix something
chemically, or is it not required as long as you keep the free chlorine in
the proper range? I typically shock about 4 times a season just so I can say
I do it. The pool will have an excessively high chlorine level for 2 to 3
days when I do this, which is another reason why I don't like to shock.
.>How often do you pool people shock your pools? I hear people mention weekly,
Sounds good to me, I think they'd have you shock much more than necessary so
you'll buy more chemicals. My pool's fine, and I rarely shock it. Keep proper
ph, a residual of chlorine, and filter/sweep a lot. Tom
Someday, it'll all be over....
Here in Florida I have a chlorine feeder but still have to super
chlorinate my inground pool about once a month during the summer. The
summer rains (and runoff from the deck) contaminate the pool and algae
will start to grow - that's when I shock it.
Superchlorination is not needed "routinely". It is needed to fix problems
that accumulate, such as from letting the chlorine get too low, or a sudden
demand from introduction of something foul.
If you use "stabilizer" (marketing term) then you are crippling the
chlorine and you will run into problems requiring superchlorination more
Was at the pool shop today, and Bioguard sells SmartShock. It says you can
go into the pool after only 15 minutes. Also, you can just add it right to
the pool, you don't have to dissolve it like the other shock requires and I
think through the skimmer. Just thought I'd post that. Also, the guy told
me to shock once a week. Shock and chlorine is all that I should need to
keep the pool in tiptop shape all summer. We shall see how we do!
Interesting - According to the 'net, Smart Shock has copper and
stabilized chlorine as the active ingredients. Perhaps it is a lower
concentration of chlorine that lets you swim after 15 minutes. Most of
the "quick swim" products use Potassium monopersulphate (i.e. Blue
Wave's Chlorine Free Shock).
I hope there isn't too much copper in the Smart Shock product since I
can see stains being a problem over time, especially on gunite pools.
You might want to consider a sequestering agent if you use a lot of
202828 - (5185 - 493)
BIOGUARD SMART SHOCK
USE: DISINFECTANT - FOR THE CONTROL OF BACTERIA AND ALGAE IN SWIMMING
TYPE: SECTION 3 REGISTRATION -
CAS NUMBER(S): 7440-50-8 , 2893-78-9
Shocking a pool is not without it's down side. Doing it too often can not
only cost you money on the unneeded shock but also on repair bills later on.
Bleached liners and degraded plastic parts (in filters) come to mind.
The pool supply people tell me I should shock about once a week or
after heavy pool usage, which ever comes first. If you have a bunch of
people in your pool you need to sanitize because in variably someone
is going to pee in your pool. I understand that if someone who has had
diarrhea gets into your pool the water will be so unsafe you may need
to replace all the water. I just super chlorinate it!
This is no doubt because they are selling you *cyanurated chlorine*,
which doesn't disinfect well. You need to superchlorinate because all
that money you're spending on "chlorine" (cyanurates, actually--read the
label) isn't providing much ORP after you load up the water with
"stabilizer" [sic, cyanurates again] that spoils the chlorine's
effectiveness. It's basically a formula to get you in the store
This method of chlorination is typically not permitted for public pools
because it so ineffective. But it satisfies the clueless pool owner.
The pools store's "computerized" tests [sic, kid with reagents typing
results into an outdated computer program designed to sell you more
stuff] *do not* test for ORP, they test for free chlorine, which is
invalid for cyanurated pools. Same for test kits you buy.
Chlorine per se is nothing, ORP is everything.
See my discussion at the end of this page:
I read your web page a long time ago, and should have read it again as it
answers a lot of my questions. I know you're anti cyanuric, but I'm not
about to bite off a project to dose chlorine without stabilizer. I try to
keep the cyanuric acid as low as I can, and boost things with calcium
hypochlorite as needed (excessive sun or swimmers). At least I'm not
shocking with stabilized chlorine....
I may go buy an ORP meter, as that seems like the true test of sanitizer
effectiveness. Although I may not know what I'm getting into as far as
keeping it calibrated and changing its electrodes.
Once a year should be more than enough, unless you are lax about
maintaining the chlorine level. We have a salt system chlorinator, so
the chlorine is always adequate. At one point last summer I had let
the stabilzer get too low, so I both added stabilizer and
superchlorinated. Over the past 4 years that's the only time I've
"shocked" the pool, and it has no algea. On the other hand, once a
week is really good for business!
Once at the start of the season and once when closing it. Other that
that I have the chemistry balanced when I open it in the spring (TA,
hardness, pH), put chlorine in it every night and keep it clean and
vacumed, check the skimmers and the pump filter. It gets to be routine
I close it as late as possible and keep it clean until the very end
(use two nets, one for the winter, and one for leaves, on top), and
spring opening is a breeze.
Just opened mine last weekend.
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