Slime & White Water Mold
WHITE MOLD! We were told we have white mold. It appeared in the spa
during a refill. We clean and change h2o the every 4 mos. The spa is a
hot springs with and ozonator and a nature 2 stick. We use
monopersulfate as a sanitizer as directed in the manual. We have
treated the h2o with a chorine granular 3x 2 days apart. The h2o seems
clear and free of floating debris. We are soaking the filters in a
filter cleaning solution 24 hrs... The chemical balance of the h2o is
in range, except the calcium hardness is a bit low. We do not want to
do add anymore chemicals, if the spa needs draining again. What do we
do now? And why did this problem occur after we drained and cleaned the
spa? Thanking you in advance for you advice....
Thank you for your question. I wish I could give you lots of good news
on this New Years Eve but...
Let me tell you some facts about White Water Mold (WWM), and then I'll
go over some treatment options.
WWM can & will grow in the plumbing lines of a spa, hot tub or swimming
pool. It can become aggressive when left alone. WWM is "killed" only by
high or higher levels of chlorine or bromine. Monopersulfate shock is a
good Oxidizer only - it's not a sanitizer. Ozone only treats what it
comes into contact in the tub, rarely in the plumbing lines.
Since we started carrying & selling ionizing products such as Nature2 &
Spa Frog, we always recommend that they be complimented by low, constant
levels of chlorine or bromine. Our preference is chlorine. This is then
further complimented by a good, solid chlorine shock on a weekly basis.
You seem to be doing all of the right things but the WWM has just had a
good chance to get settled into your spa's plumbing. When you drain &
refill the spa, we have found that it's an excellent time to clean the
lines by using
Spa System Flush or Swirl Away.
Both of these products work well in helping to break down the
accumulating biofilm in the lines.
One last thing to keep in mind is that WWM loves to grow in garden
hoses. So, when you fill your spa, you’re putting a nice big dose of
that stuff into the spa right off the bat. As more & more water
companies use chloramines instead of chlorine to treat their water,
there's a much greater level of this biofilm everywhere. Garden hoses,
toilets, sinks, etc. You can read more about
I'm sorry that I don't have better, easier news for you. WWM & its buddy
Pink Slime work hand in hand so to speak. If you've seen one, you'll
probably see the other shortly.
Follow Up Question:
Thank you for your quick response. I had just
returned from a check of the spa, and sure enough, it is back!!!! The
"STUFF" accumulated around the bubbler and the seating area nearby. I
had thought the chlorine shock treatment was working. So before we
drain the spa for the third time we should try the flush away or the
other product? And you are saying we should add chlorine to our spa on
a weekly basis, as a preventive measure? Our spa is 350 gals. How much
of the chlorine should we use? Our manual and the salespeople, told us
we would not be using chlorine, so we have no clue what or how much to
use. Please advise, as we continue this battle against the dreaded
WWM!!!! THANKS AGAIN...MAYBE Y0U WILL HELP THE NEW YEAR GET OFF TO A
BETTER START WITH YOU KNOW HOW!!!!
Follow Up Response:
Here's what I would recommend you do (I don't think you have a choice):
1. Drain the spa & start fresh. FIRST - Use 4 to 6 oz. of SpaGuard
Chlorinating Concentrate to help kill what's in the spa lines &
throughout the system. Let it circulate for a good 2 to 3 hours. Then
use Spa System Flush or Swirl Away to help clean out the lines.
2. Thoroughly clean all of the surfaces & nooks & crannies of the spa.
Around jets, pillows filter area. All of these areas are prime growing
areas of WWM & PS (pink slime) because they are areas of poor
circulation & little if any normal cleaning, brushing, etc.
3. Refill the spa. Make sure that the garden hose runs for a minimum of
2 to 3 minutes to flush out as much Water Mold & Pink Slime that may be
in the hose.
4. Balance the water (pH, total alkalinity & calcium hardness). Add
SpaGuard Stain & Scale Control.
5. After running for a day, Shock the refilled spa with 4 to 6 oz.
SpaGuard Chlorinating Concentrate. In your case, I would recommend
using 2 to 3 oz. per week & then maintain a chlorine level of about 1.0
ppm from then on. If you test about twice weekly, you should be in
pretty decent shape.
As far as mineral purifiers go, there's going to be some new data
shortly available that demonstrates the need for a low, constant level
of chlorine or bromine to be maintained. These are new EPA guidelines.
We have had to change some of our wording on our site. I wish others
would follow suit.
I hope that helps. Let me know. A little work now will help ensure a
better hot water experience for you in the future.
We are having trouble with the water in our spa. It appears to have
tiny little white bits of paper (chemicals) floating in the water. We
thought that maybe the filter was not working efficiently so we drained
the spa, cleaned it all out and replaced with a new filter. We then
filled with new water and chemicals and we are still getting these tiny
bits. We use a skimmer to drag through the water which helps but they
just seem to keep coming. Our store that we purchased the spa from told
us to shock it and see what happens, that didn’t work either it is still
bitty. Do you think it will just take time to run through the filter or
is there something else we need to do? The water is clear otherwise and
it doesn’t seem foamy at all.
It's very possible you may have white water mold growing in the plumbing
lines. I would recommend doing 2 things:
1. Shock the spa WELL with chlorine. Get the chlorine level up to at
least 5.0 ppm. Run for a good 4 to 6 hours.
2. Add a bottle of Spa System Flush to the spa, run for 30 minutes,
then drain & refill.
You may have to repeat the process to thoroughly get rid of it.
More White Water
Mold Q & A
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