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''In our recommended approach for winterization, the pool should be "shocked" with about 5-10 ppm chlorine to destroy any lingering oxidant demand, to remove any residual ammonia or chloramine, etc. After a couple of days, adjust the pH back to 7.2-7.6 and add Polyquat 60 at the maximum rate allowed by the label. This approach allows you to have the maximum benefit from both chemicals. One more point about winterizing: after the addition of Polyquat 60, be sure to keep the circulation pump on for at least 24 hours to make sure that the Polyquat 60 is thoroughly distributed throughout the pool.'' | ''In our recommended approach for winterization, the pool should be "shocked" with about 5-10 ppm chlorine to destroy any lingering oxidant demand, to remove any residual ammonia or chloramine, etc. After a couple of days, adjust the pH back to 7.2-7.6 and add Polyquat 60 at the maximum rate allowed by the label. This approach allows you to have the maximum benefit from both chemicals. One more point about winterizing: after the addition of Polyquat 60, be sure to keep the circulation pump on for at least 24 hours to make sure that the Polyquat 60 is thoroughly distributed throughout the pool.'' | ||
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| + | Polyquat 60 is a mild clarifier. | ||
Polyquat 60 is the sanitizer in optifree contact lens solution so it's also safe for eyes.<ref>https://www.troublefreepool.com/threads/intex-pool-winterizing-they-dont-make-clips-for-intex-pools.185746/post-1639115</ref> | Polyquat 60 is the sanitizer in optifree contact lens solution so it's also safe for eyes.<ref>https://www.troublefreepool.com/threads/intex-pool-winterizing-they-dont-make-clips-for-intex-pools.185746/post-1639115</ref> | ||
Revision as of 23:56, 8 September 2019
What are Algaecides for Pool Water?
Algaecides are chemicals that may reduce the tendency for algae to take hold in pool water.
Algaecide will not fix an algae problem once you have algae in pool water.
Algaecides do not sanitize the pool water.
In general TFP does not recommend the use of algaecides for regular pool care. If you maintain the proper FC/CYA ratio in your pool water algae will not take hold.
Using algaecide regularly masks the fact that the pool water is not safe to swim. Chlorine serves both as an algaecide and a sanitizer. If you get algae, your chlorine level is too low for swimming because there isn’t enough to prevent the transfer of pathogens. No amount of algaecide will make the water safe even if it keeps the water crystal clear. This is the fundamental reason we don’t recommend regular algaecide use during swimming season.[1]
Algaecides are used as a preventive treatment either at winter closing or specific processes like Ascorbic Acid treatments when the FC level must be low.
For closing a pool when water temperatures is above 60F an algaecide with Polyquat 60 may prevent algae and having a green pool when opening.
What is Polyquat 60?
Polyquat 60 is short for Poly{oxyethylene(dimethyliminio)Ethylene (dimethyliminio)ethylene dichloride}[2] 60% a is a quaternary ammonium cationic polymer.[3]It is a chemical algaecide. Many manufacturers bottle it. Look for pure Polyquat 60 like from Pro Team.
Chlorine will oxidize Polyquat 60. If you raise your water to SLAM FC level then let the FC drift down before adding Polyquat 60. Having a moderately higher level (say, half-SLAM level so FC/CYA ratio of 20%) is OK, but the idea is that the Polyquat should last through the winter even if the chlorine does not.[4]
Buckman Laboratories, in Memphis, TN, makes all the polyquat sold in the US, regardless of the label. Arch(HTH), BioLab (Bioguard, Omni, Pool Time, Aqua Chem, Sun, many others), LaPorte (Robarb, etc.) ALL simply repackage -- and possibly, dilute -- what Buckman makes.[5]
The following is Buckman Labs (the makers of most PolyQuat products) recommendation on how to use the product for closing a pool:[6]
In our recommended approach for winterization, the pool should be "shocked" with about 5-10 ppm chlorine to destroy any lingering oxidant demand, to remove any residual ammonia or chloramine, etc. After a couple of days, adjust the pH back to 7.2-7.6 and add Polyquat 60 at the maximum rate allowed by the label. This approach allows you to have the maximum benefit from both chemicals. One more point about winterizing: after the addition of Polyquat 60, be sure to keep the circulation pump on for at least 24 hours to make sure that the Polyquat 60 is thoroughly distributed throughout the pool.
Polyquat 60 is a mild clarifier.
Polyquat 60 is the sanitizer in optifree contact lens solution so it's also safe for eyes.[7]
Polyquat 30 is a lower concentration of Polyquat.
Follow the instructions on the bottle for circulating the water.
Beware of Algaecides that Contain Unwanted Chemicals or Metals
Many algaecides sold at pool stores contain copper. You do not want copper accumulating in your pool water. The only wat to remove copper from pool water is by draining the pool. Copper in pool water can cause staining or turn blonde hair green. For more see Copper in Pool Water.
If you choose to use an algaecide know what all the chemicals in it are and their effect on your pool water. If you are not sure, ask on the TroubleFreePool Forum before adding it to your pool water.
- ↑ https://www.troublefreepool.com/threads/algaecide-and-getting-rid-of-algae-in-pool-most-effective-and-economical.192831/post-1699166
- ↑ http://finoric.com/PolyquaterniumWSCP.htm
- ↑ https://www.troublefreepool.com/threads/polyquat-algaecides-mode-of-action.46432/#post-388431
- ↑ https://www.troublefreepool.com/threads/polyquat-question.106076/post-928410
- ↑ https://www.troublefreepool.com/threads/which-brand-of-polyquat.51526/post-435931
- ↑ https://www.troublefreepool.com/threads/i-am-a-stranger-at-the-pool-store.8236/post-69227
- ↑ https://www.troublefreepool.com/threads/intex-pool-winterizing-they-dont-make-clips-for-intex-pools.185746/post-1639115
