Kem-Tek KTK-50-0006 Pool and Spa 60-Percent Concentrated Algaecide?

[Grayson73]

I ordered the TF-100 test kit. I also have 2 bottles of this Algaecide and was wondering whether using this would increase/decrease any of the tested chemicals. When should this be used? Since I already own them, I'd prefer to use them wisely rather than trash them.

Amazon.com : Kem-Tek KTK-50-0006 Pool and Spa 60-Percent Concentrated Algaecide, 1 Quart : Swimming Pool Algaecides : Patio, Lawn Garden

 

[Donldson]

It is a polyquat-60, which I guess you could call TFP-accepted (as in we don't recommend regular algaecide use is most cases but if you use one this one causes few if any problems). The best use for it would be at closing, as long as you keep the FC above the minimum for your CYA then it really isn't needed during the swim season.