Please see some information below. An important point is that chlorine levels should be lower if using Poly 60 or you are just wasting money. There was detailed information from Chem Geek as he contacted the manufacturer at one point where the Poly 60 alagecide is made. At $25 per bottle, safer is better. It is either low chlorine levels and Poly 60, or SLAM levels (then close) and no Poly 60. Please note that this is from experience and further readings.
POLY QUAT DETAILED INFORMATION. | Your levels at closing are either at the highest or at normal, not in between. If you are using Poly-Quat, then you must allow your levels to come back down to normal. |
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| If you are not using the algaecide, then keep at SLAM right before you close. |
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| If you are using Poly-Quat, allow your levels to drift down to your normal CYA/FC levels. If you are not using the algaecide, you can close with the SLAM - higher levels. |
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| You can even bring to SLAM the day before you close as well. There is an interaction between high chlorine levels and the algaecide that does not work well together. |
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| "Polyquat does not oxidize chlorine; it is the other way around where chlorine oxidizes Polyquat." |
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| Even the instructions state to keep your FC at a certain level. Post # 2, quote from (Chem Geek) |
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| Polyquat algaecides: Mode of Action |