| 5. |
Pool scum is a ring that forms around the pool at the water line and is |
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made up of soil, contaminants from suntan lotion, environmental pollution, and organic materials from bather load, etc. |
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| The following procedure has been recommended by experts in the pool industry as being effective in eliminating "pool goo" or "pool tar" problems. |
| 1. |
Stop using quaternary algaecides. |
| 2. |
Reduce and maintain pH at 7.0 - 7.2. |
| 3. |
Superchlorinate every other day to 6.0 - 8.0 ppm. |
| 4. |
Use heater to speed up warming of water, if available. |
| 5. |
Continue to circulate water and monitor pressure on filter. |
| 6. |
Backwash filter as often as required. |
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| The attached Technical Information Bulletin issued by BioLab Inc. and reprinted with the permission of BioLab, discusses the plasticizer exudation phenomenon in greater detail. I feel that it will be very useful in promoting greater understanding of this problem.
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