This is the first year for our Intex 12x20x48 oval pool. I have no clue what to do or the chemistry involved. I live in Michigan (right smack dab in the middle). So it does get cold here. I have the salt water system and it has worked well for us. I would prefer to leave it up with the size it is and I would be the only one to wrestle it around to store it. Anyway, what would be the proper way to close this thing. I mean do I drain it a little to get the water below the in / out fittings so I can drain the valves. Do I blow up the ring so it stays inflated over the winter. I have read to NOT leave the solar cover on it. My original cover got ripped, can I use a quality tarp (obviously not a cloth one)?

Intex suggests that it can be left up, after putting in the proper chemicals. But, what are they?

Thanks for any suggestions!