Pour slowly in front of return. Quart measuring cup. 2 qts= 4parts FC. I get 2.5 Gal or 5 Gal. I have spouts and lids from Anyone purchased refillable chlorine? Container choice?
I did find a spout on amazon with a tube for letting air in that I have not used yet. If you go thru the other site might as well get 4 of each since shipping doesn't change. I cracked a lid and I am glad I bought 4. Budds does have nice wrenches for the lids.
You can use the cal hypo. But I would suggest switching to liquid chlorine as soon as you can get some. Cal hypo will add calcium to your pool water. Not a big deal right now but eventually it can be an issue. It also can sit on the liner of your pool and bleach out the color. Be sure you mix it in well.
If you add liquid chlorine BE SURE to NOT add anything with any additives in it! Chlorox usually has extra goodies in it that are fine for your laundry but bad for your pool!
Generally, store-brand cheapo bleach is fine or home store/pool store liquid chlorine.