FREQUENTLY
ASKED QUESTIONS
1. WHY
DO I NEED TO SHOCK MY POOL EVERY WEEK?
Shocking your swimming pool is
a very important element in maintaining your pool water's clarity
and balance. Using chlorine tablets alone will not kill off all
bacteria and algae that grow in the pool water. Also, the chlorine
tablets have a very low PH level, and their overuse will lead
to a low PH, which is very dangerous to the pool, and it's users.
By shocking the pool each week, you will be quickly raising the
chlorine level, which will rid the pool of contaminants, without
lowering the PH of the pool water.
2. WHY IS
THE PH OF MY WATER SO IMPORTANT?
PH is the measure of acidity in
the pool water. PH only ranges between 0 - 14, so even a slight
change in the PH of your water can greatly effect various elements
in your pool. A pool's PH should be maintained between 7.2 and
7.6. A low PH means that the water is acidic and will dry out
your liner, eat away at any stainless steel and copper parts of
your pool, as well as cause irritation to swimmer's eyes and skin.
PH can be easily tested for and is inexpensive to adjust.
3. WHY DO
I NEED TO BACKWASH?
Backwashing your filter removes
debris that gets caught up in your sand or DE so that your filter
can continue to work effectively in cleaning your pool. Backwashing
should be done whenever the filter pressure increases approximately
10 psi over normal pressure, and the water pressure returning
to the pool decreases. Follow your filter systems instructions
or contact Dunrite Pools for directions on backwashing for the
system that you have.
4. I HAVE
A SAND FILTER. WHY IS MY POOL ALWAYS CLOUDY?
Sand filters have a difficult
time filtering out very small debris because often times the microscopic
particles of dead algae and waste are smaller then the grains
of sand themselves. A sand filter can also "channel,"
causing pockets in the filter where water passes through easily,
without going through sand. To prevent this, you need to chemically
clean your sand at the end of each season with a designated filter
cleaner, backwash frequently throughout the season, and use clarifiers
to help the water remain crystal clear.
5. HOW MANY
TABLETS SHOULD I BE USING FOR MY POOL?
We recommend that 1-2 tablets be used for every 10,000 gallons of pool water. During cooler water temperatures and when the pool receives less use, one tablet per 10,000 is sufficient. During the hottest summer months when pool use is high, 2 tablets can be used for every 10,000, but no more then that should be used. Keep in mind that tablets do have a low PH, so overuse of them can disrupt balancing chemical levels. If there is a large amount of algae in the pool, extra shock can always be added without effecting the PH level.
6. WHEN IS THE BEST TIME TO SHOCK MY POOL?
You should always shock your pool
in the evening, after the sun has gone down. Shock is an unstabalized
chlorine that can burn off easily from sunlight, even on overcast
days. By shocking at night, you are giving the chlorine a chance
to bond with the chlorine stabalizer so that by the time the sun
comes out the next day, your chlorine level won't dissipate as
quickly. Also, this gives the pool enough time to react with the
high level of chlorine, so that you can usually swim the next
day after a pool has been shocked.
7. HOW LONG
SHOULD I WAIT TO SWIM AFTER ADDING CHEMICALS?
Most balancing chemicals, such
as PH, Alkalinity, and Calcium Hardness, will become incorporated
into the water within an hour of adding them, at which time swimming
is safe. Shock takes longer to adjust with the pool water, so
waiting overnight after shocking before you swim is recommended.
8. WHY DO
I NEED TO HAVE MY WATER TESTED PIP4?FESSIONALLY EVERY 2-4 WEEKS?
Testing at home with your strips
or drop test kits give you only a limited reading of your balancing
chemical levels of your pool water. The average home test kit
only reads PH, Chlorine, and sometimes Alkalinity. There are various
other levels that are important to your pool that need to be tested
on a regular basis to ensure water balance and safety for the
swimmers. Also, the professional testing done in store is far
more accurate than home tests, leaving you with added security
that your pool water is safe and balanced.
9. I'LL BE
GOING ON VACATION FOR A WEEK. WHAT SHOULD I DO TO KEEP MY POOL
HEALTHY WHILE I AM GONE?
While you are away, it is important
that your water circulates and is sanitized. A pump timer and
automatic chlorinator are the most fool proof ways of ensuring
that this is done, because they will automatically turn your pool
on and off each day, and distribute chlorine into your water.
If a timer and automatic chlorinator are not an option for you,
having a neighbor stop by once every day or two to run the pump
and check on chemicals will help to keep your water healthy while
you are away.
10. WHAT IS
THE DIFFERENCE BETWEEN HTH AND OTHER CHLORINES?
HTH is a calcium based product,
which means that although it can be very effective in killing
off contaminants in your water, it can also lead to some problems
long-term. The high level of chlorine in HTH can more rapidly
bleach out liners and bathing suits then other chlorine products.
Also, with long-term, high usage of HTH, the pool can develop
calcium buildup, which would lead to calcium scaling inside of
the filter and in the lines of the pool. This scaling ultimately
causes damage to your filtration system, and can be avoided by
using HTH in limited amounts, or by using other types of chlorines.
11. WHY AM
I GETTING DE BACK INTO MY POOL?
Getting DE back into a pool is
an indication of some type of problem within the filter itself.
Although it could simply be a matter of using too much DE after
backwashes, more often it means that a part inside the filter
needs to be replaced. If you have a grid system DE filter, (most
inground pools have this type) it could mean that the spider gasket
in the multiport needs to be replaced, that the grids inside the
filter are torn, or that the manifold, which holds the grids together,
has cracked. Filters with "fingers" (most aboveground
systems and some older inground systems) the fingers could be
torn, the diaphragm gasket may need to be replaced, or the tube
sheets may have cracks in them. Check your filter carefully to
make sure that all parts are in good condition, and replace necessary
parts. Dunrite also offers a "Clean, Soak, and Inspect"
service on filters. This includes cleaning the filter elements
of large debris, soaking them for 24 hours in a chemical solution,
and inspecting all parts by hand.
12. WHAT IS
THE DIFFERENCE BETWEEN CLOROX AND LIQUID SHOCK?
Liquid shock is 12.5% sodium hypochlorite.
Clorox bleach is 3% sodium hypochlorite. Although they are made
of the same chemical, the percentage of chlorine in shock is much
greater than Clorox bleach. To treat a 20,000-gallon pool, you
would need to use two bottles of liquid shock. To achieve the
same amount of chlorination with bleach, you would need to use
eight bottles. Additionally, Clorox bleach contains added detergents,
which could interfere with the chemical balance of your pool.
13. CAN I
USE BAKING SODA TO RAISE THE ALKALINITY OF MY POOL?
Baking soda is similar to the chemical, that is used to raise
the Alkalinity of the water, and will give you the same rise that
alkalinity powder will. However, baking soda is a much larger
granule, and will cloud up the water if used in great amounts.
If you need to raise the alkalinity of your pool slightly, with
one or two pounds of alkalinity powder, it is usually safe to
use baking soda. However, if your water balance requires a significant
increase, it is recommended that actual Alkalinity Increaser be
used, as it is a finer granule and will rarely cloud the water,
even if used in considerable amounts.
14. CAN I
APPLY MY CHEMCIALS THROUGH THE SKIMMER?
Most swimming pool chemicals are not recommended to be applied
directly through the skimmer. Shocks are a very strong concentration
of chlorine, and if applied directly through the filter, can cause
damage to the pump and filter as they pass through in such great
concentration. In addition, granules that are not dissolved by
the time they return to the pool can sit on the pool floor and
bleach the liner. Another chemical that should never be applied
through the skimmer is Calcium Hardness as it heats up when mixed
with water and could cause damage to your filtration system and
liner. Always follow the directions given to you by your sales
associate when applying chemicals to your pool, to be sure that
no damage is made to your valuable pool items!