Hello bibeaud,
Please read:
http://www.troublefreepool.com/pool-school/closing_in_ground_pool also:
http://www.troublefreepool.com/pool-school/winterizing%20and%20closing%20your%20above%20group%20pool has some good pointers that apply.
I would not waste your money on that kit, there is nothing you should need in it. Some of us use the polyquat 60 though (I have not). I believe the "non chlorine shock" in that kit is a MPS, from pool school:
Quote:
Potassium Monopersulfate:
A non chlorine oxidizer or 'shock'. It is acidic and will cause lower pH and TA. It adds sulfates to the water. Will not break down CC but helps prevent it from forming when used on a regular basis. It will interfere with TC and CC tests unless special reagents are used in testing since it WILL test as CC! A good choice to use in indoor pools that are not exposed to sunlight but really has no advantage in an outdoor pool. It is only an oxidizer and NOT a sanitizer and should not be used as such.
bibeaud wrote:
I like the chlorine-free chemical floater.
May I ask why? Please continue to read pool school. If you want a rather detailed synopsis of this issue, see this post:
http://www.troublefreepool.com/alternative-sanitizers-and-chemical-free-pools-the-truth-t3025.html