This information was provided with the ECHO Progress Report. ECHO can
be reached at 612-972-2144.
SWIMMING POOLS AND HOT TUBS
The following information on the use of hydrogen peroxide for swimming
pools/hot tubs is considered experimental. Check with your swimming
pool or hot tub manufacturer about the compatibility of hydrogen
peroxide to your system.
It has been found for start up that 1 pint of 35% food or technical
grade hydrogen peroxide should be added for each 1000 gallons in the
pool system. Let stand for one day with the circulation pump running
intermittently. (Dr. Donsbach indicates from his experience that an
average size pool takes about eight gallons to begin with and then
one-half to one gallon must be added per week.) The pool should be
maintained at 40 parts per million. This can be determined by peroxide
test strips or by use of a titration kit.
It is extremely important to keep the filters clean. The addition of
an ultra violet light or an ozonator will reduce the amount of
hydrogen peroxide that you will need to add.
Sunlight will dissipate hydrogen peroxide just as it dissipates
chlorine, so regular additions of H202 will have to be made. The
number of people using the pool or frequency of pool use determines
the amount of H202 that must be added.
Most water from municipal water supplies contains chlorine. This is
why the original “shock” of a large amount of hydrogen peroxide is
necessary for start up. Hydrogen peroxide forces chlorine out of the
water in the pool or hot tub.
One incident where H202 did not work in the pool was because of the
mineral content of the water. A diatomaceous filter will require more
attention than a sand filter because a diatomaceous earth system will
filter out smaller particles than a sand filter. If you have a
diatomaceous earth filter, the addition of a paper filter ahead of the
filter will keep it from clogging up as frequently.
Just a note as to what may happen with extreme amounts of hydrogen
peroxide. I swam in a pool with one hundred parts per million and
noted on getting out of the pool the dead skin flakes that floated on
top of the water. It was very refreshing.
Check with the hot tub manufacturer to determine the compatibility of
your system with H2O2 The average size hot tub could be started up
with one quart or more of 35% H202 until it tests 40 ppm. Turn the
circulation pump on to distribute it evenly, then intermittently
during the next 24 hours. Add enough hydrogen peroxide from time to
time to maintain it at approximately 40 parts per million.
Peroxide test strips can be ordered from:
Lab Safety Supply
P.O. Box 1368
Janesville, WI 53437
2560 Muhlenhardt Road
Shakopee, MN 55379
4853 Joyce Drive
Dayton, OH 45439
Titration test kits for hydrogen peroxide are available from:
Hach World Headquarters
P.O. Box 389
Loveland, CO 80539
Calverton, VA 22016