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OTHER ALTERNATIVE SANITIZERS
Summary
of Alternative Sanitizers |
| Name |
Description |
Sanitizer |
Residual |
Fast kill |
Oxidizer |
Algaecide |
| Chlorine
Generators |
Chlorine
generation from salt |
Yes |
Yes |
Yes |
Yes |
Yes |
| Ionizers |
Copper/silver Ion
generation |
No |
CU Only |
No |
No |
Yes |
| Magnets |
Permanent Magnets |
No |
No |
No |
No |
No |
| NOGS |
Nascent Oxygen
Generators |
No |
No |
No |
No |
No |
| Ozone Generators |
Produce Ozone |
Yes |
No |
Yes |
Yes |
Yes |
| UV Devices |
Ultraviolet
Disinfection |
Yes |
No |
Yes |
No |
Unknown |
| Vision Unit |
Oxidative Catalysts |
No |
CU Only |
No |
No |
Dissolved CU |
This table is taken from "Alternative Systems" written by Neil Lowry (in the TMI Library)
Salt Pure vs.
Ozone
Ozone has a half-life of 19 minutes in a pool. One hour after the Ozone system is shut down, all Ozone is depleted.
Because of Ozone’s short effective life span, chlorine must be added to the pool water in addition to Ozone to maintain a
sanitizer residual.
Massive amounts of Ozone are needed... Ozone systems costs are very high in relation to other alternatives.
Ozone works well enough for small spas, but not for pools or large commercial spas.
Salt Pure vs. Ionization
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Ionization requires the addition of metals to the pool water, usually silver to sanitize and copper to kill algae.
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Ionizers have a history of staining problems. Replastering is costly and time consuming.
-
It is very difficult to accurately measure the sanitizer level of an ionized pool.
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Ionizers do not remove organics like sweat, body oil or urine so chlorine still has to be used.
NOTE: Both Ozone and Ionization depend on the
addition of Chlorine for their systems to be effective!
Related articles in the TMI library:
Weighing the Options
Ozone, An Assist
Alternative Systems
The Salty Solution
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