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Spa & Hot tub Care, Tips, Information

"Spa Water Mold" or White Water Mold
Spa Water Mold is a growing problem, especially in spas that are not maintained properly and/or are used infrequently.

The picture you see had been properly maintained since its installation in August 2014. The picture was taken in mid April 2015...8 months!

Once you can see the mold on the surface of the spa (as shown in the picture), you can be sure that the plumbing lines, air lines & jets are completely infested.

Many of you have been asking about this problem, so here is some information about Spa Water Mold, as well as how to treat it and how to prevent it.

Watch a quick video here.


What it is & what it looks like:

a naturally occurring fungus
(this is NOT a form of Algae; it is animal not vegetable)
Spa Water Mold (WWM) - along with Pink Slime - come from Biofilms

white mucous or tissue paper-like looking substance
forms a heavy, protective coating providing the organism with an unusually high level of protection that is very resilient against halogen-based (chlorine, bromine) & non-halogen sanitizers or germicides
can remain a contaminant even after treatment
exists on the surface of PVC plastics, inside piping, filter cartridge housings, jet nozzles, etc.  If you see it on the inside surface of your spa, it is well established in all of the plumbing lines & air blower lines of your spa or hot tub.
can re-contaminate long after it appears that it has been destroyed (includes pool toys, floats, ladders, steps, fountains, automatic pool cleaner parts, skimmer baskets, weirs, directional fittings, garden hoses, etc.)
small quantities can lead to a re-establishment of the problem
caused by improper water & pool maintenance, environment, poor circulation
prefers areas that are "dark" (not exposed to direct sunlight) & with "slow moving" water (behind jet nozzles, the back of the motor impeller, etc., areas that you would think have a lot of water motion)

Prevention of "white water mold" is preferred over treatment. Follow these steps to help prevent white water mold:
1. Physically brush & clean ALL Spa surfaces weekly, including steps, jet recesses, & behind pillows
2. Expose ALL pool surfaces to as much sunlight as possible (sunlight & UV are natural
3. Remove the lid from the skimmer to allow sunlight into the basket for several hours each day ** INGROUND POOLS MUST USE EXTREME CAUTION in doing this in order to avoid a person falling into or otherwise injuring themselves due to an open skimmer.
4. Regularly add oxidizing chemicals into the skimmer to purge & clean the filtration lines of any bio-film*
5. When adding make-up water from the garden hose, allow the water to run for 2 to 3 minutes before putting the hose into the pool.
6. Regularly clean spa & hot tub toys & floats (use BioGuard® Stow Away)
7. Regularly clean pool solar blanket (use BioGuard® Stow Away)
8. Chemically clean pool filter every 4 to 6 weeks (use
SpaGuard® Filter Cleaner or SoftSoak® Filter Cleaner)
9. Add regular Maintenance dosages of "Shock" (SpaGuard
® Spa Shock, SpaGuard® Enhanced Shock, SpaGuard® Chlorinating Concentrate, SpaGuard® Brominating Concentrate or SoftSoak® Shock) every week as prescribed
10. Supplement whatever hot water care system you are using with Hot Tub Serum or AquaFinesse. Both products will effectively prevent the biofilm from re-establishing in the spa's plumbing lines.
10. Run the filter a minimum of 6 hours daily to prevent "dead spots" in the pool
11. Remember to clean & rinse the brushes, hoses & vacuums that you use to clean the spa
12. Leave as much of your spa equipment exposed to the sun
13. Keep the water balanced at all times. Recheck after heavy usage or rain or large "top-offs" of new water. Water balance refers to Free Available Sanitizer level, pH, Total Alkalinity, Calcium Hardness.

Products to Treat & Prevent Spa White Water Mold & Bio-film - Click here

Treatment of "white water mold" MUST BE QUICK AND TOTAL! DON'T SKIMP!
1. Clean all spa or hot tub surfaces as prescribed above.
2. Physically clean & remove all visible "white water mold"
3. Clean the interior of the filter cartridge area & as much of the spa equipment pack as necessary
4. "Shock" the pool with a triple or quadruple dose of the proper shock treatment for your spa or hot tub.
5. Drain & refill the spa.  Use a spa water purging product to help remove the built-up bio-film in the lines prior to draining.  If the situation is very bad, refill the spa, shock it with chlorine, allow to circulate for 1 day, then drain & refill again using Hot Tub Serum will purge BAD  problems in under 30 minutes! This is by far the best new product to use.
6. Chemically clean the filter using SpaGuard® Filter Cleaner or SoftSoak® Filter Cleaner; if the cartridge is more that 1 year old, throw it away & start fresh with a new cartridge.
7. Test the water & properly balance it.
8. Maintain good water balance of pH, Total Alkalinity & Calcium Hardness

For further information, please visit our Knowledge Base

If you still need help, here's how to reach us:

Telephone (during store hours): Shelton  203-377-0100

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