Frequently Asked Questions about CuZn's MegaDisk, MaxiDisk
and Spa Core for Swimming Pools, Spas and Hot Tubs
1. How does CuZn disk technology work?
The MegaDisk, MaxiDisk and Spa Core for swimming pools, spas and hot
tubs work through the controlled release of copper-zinc ions.
2. How does it help control algae and bacteria?
Copper is a well-known algaecide. The release of copper-zinc ions into
water helps control the growth of bacteria and algae.
3. Why Don't I need to test for hardness or pH?
The disks contain copper-zinc ions that self-regulate the water's pH,
reduce scale and make the water act softer, and help control algae
and bacterial growth. Hardness tests will not show how the copper-zinc
ions change the way calcium in the water is shaped so as not to turn
into scale.
4. Why is the pH higher with the disk than with chlorine?
Chlorine requires you to keep the water's pH between 7.2 and 7.6 because
that is where chlorine performs best. The disk creates its own best
operating level, usually between 7.6 and 8.2. Don't try to lower the
pH with chemicals because these will severely reduce the disk's efficiency.
After the disk is installed, test the pool or spa water for pH for
a few days to determine a baseline pH. This baseline pH will help in
determining when the disk needs to be replaced.
5. Is there a test that shows whether the disk is still working?
Water becomes cloudy when there's an increase of bacteria in a pool or
spa. When bacteria increases, the water's pH decreases. If you test
your water for pH and find it is below 7.2 and if it continues to decrease,
then it's time to replace your MegaDisk, MaxiDisk or Spa Core. That's
why it's important to establish a baseline pH. See the previous question
6. Are there other tests I need?
No other tests are needed when using the MagaDisk, MaxiDisk or Spa Core.
You can do a test to determine the levels of copper and zinc ions,
as these decrease over time. This is another way to determine when
the disk needs replacing
7. What happens if my pool or spa becomes cloudy?
Under normal circumstances the water in your pool or spa will be clear
when using the disk. Cloudy water may mean the water in the pool or
spa is not circulating though the disk often enough. Increase the time
your pump runs to increase the circulation of water through the disk.
MAKE SURE THAT WHEN WATER RUNS THROUGH THE DISK, THERE IS NO SUCTION
ELSEWHERE IN THE POOL OR SPA. If the water remains cloudy, it may be
time to shock to pool or spa or to replace the disk.
8. What are NOT normal circumstances?
Too many people in the pool or spa at one time creates excessive bather
load and can stress the disk system. Excessive rain or heat, foliage
in the water and animals swimming in the water also are considered
abnormal circumstances and can cause a spike in bacteria in the pool
or spa. This sudden increase can cause the water to become cloudy
9. If this happens, how do I get my water back to normal?
Turn on the pump and circulate the water through the disk, without suction
except where the disk is located, for 24 hours. If this does not clear
up the water, then you will need to give the pool or spa a mini-shock
treatment
10. What is a mini-shock treatment?
Mini-shock treatment is using a dose of a shocking agent, such as chlorine,
to decrease the bacteria in the pool or spa over a 24 hour period.
Remove the disk during the shock treatment. Replacing the disk 12 hours
after the shocking treatment is over will help remove the chlorine
as well as resume normal operation in helping to control bacterial
and algae growth.
11. Will I need to do anything else?
When using the MegaDisk, MaxiDisk or Spa Core, no other treatment is
necessary under normal circumstances. In fact, using chemicals will
reduce the efficiency of the disk. Some spa or pool owners like to
shock their systems periodically - once a week or every six weeks -
as preventive maintenance. If doing this, remove the disk during the
treatment and return it 12 hours after the treatment is completed.
12. What happens if my water turns green?
There is nothing in the disk to cause water to turn green. Nitrogen-based
compounds, such as fertilizer or herbicides or pesticides, can cause
this if they get into your water. Consult your spa or pool expert for
ways to correct this situation and remove the disk during the treatment.
13. How do I know when to replace the disk?
Your water will turn cloudy and will not recover, even with a mini-shock
treatment. This is often the first sign the disk is reaching the end
of its useful life. You can test pH levels to compare them with the
baseline pH you established when the disk was new. If the levels have
dropped, the disk may need replacing. See question 5.
14. Why does the disk darken?
It is normal for the disk to darken in color. This shows the disk is
working. The disk oxidizes as it treats the water, and the oxidation
darkens the copper and zinc elements in the filter.
Also see:
What's So Special About CuZn Water Systems?
Read more about CuZn's patented KDF FilterFoam and Acid Washed Coconut Shell Carbon Media
How CuZn Water Filtration Media Works
CuZn Water Filters are made in the U.S.A. and are Duty FREE to Canada
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