Chlorine & Algaecide addition's in the Winter

[donfranko]

Thanks.
I have a mesh loop lock (dark green). Pool was spotless and balanced when I closed. I'll take a look and check the chems.
No sump so if I do add some CL I will probably do it slow and add it in the deep end. In a month it will be frozen anyway.

[CarlD]

I live in the same region and also use a mesh cover over a vinyl liner. I, too, add lots of PolyQuat, then shock the water up to 15ppm prior to closing.

It has been unseasonably warm, but we have had some sub-freezing too. It doesn't hurt to check but check your water temp as well. If the water is well below 60, you shouldn't be seeing a problem. If it's below 50, better still.

If you decide to add bleach, I would strongly suggest that you dribble it around the edges--don't just add it in one spot or you can damage the liner. Because of the circulation being, well, non-existent, I'd stick to bleach, not the stronger stuff. If FC is low, you may want to consider buying or renting a submersible sump pump to get the water moving.

[waste]

Carl, I agree, without flow, a 'plug' of cl could possibly damage the liner. I may not have been 'crystal clear' on my advice on adding bleach, but what I was saying is that if you need to add a gal and don't have any circulation, peel back the safety cover on one long wall and add it, at arms length (#3 in one of your old posts), going from one end to the other and back to add the gal. (BTW I'm at ~ the same latitude - if I headed due west out of my condo, I'd be within 10 min of Mawah, and about 20 min from my old house in Tenafly - when I closed 2 pools Wed, the water temp was 47 - 50 deg (I don't know if a mesh cover retains heat, but uncovered pools in Ct are below 50 deg).

[CarlD]

I'm about 15 min west of Newark--a little south of you. I think mesh gets colder than solid...if you think about it. There's no barrier to heat rising, no greenhouse effect. Plus the mesh allows evaporation, which also keeps the water cooler.

I would say, if the water is pretty clear and 50 or below, don't bother adding anything. In fact, unless you have a reason to, I prefer, myself, to leave it alone. It's going to get colder--this absurd heat wave cannot last.