If your CYA reading is 100, that means it could actually be much higher than that since the test can't differentiate values over 100. Take a look at the Best Guess Chlorine chart in my signature below. You need to be shocking the pool up to 25ppm and try and hold it there. Test at least a couple times per day and each time, add enough bleach to get back to 25. You need to continue the high chlorine level until you can go from sundown one day til within 2 hours of sunup the next day without losing more than 1ppm of cl. At that point, you can assume you have no algae trying to start and can let the cl drift down, but with that high CYA, you'll need to keep the chlorine between 8-15ppm all the time or you are going to get algae. Tell us the volume of the pool, and we can help you calculate doses of bleach.

I assume you have either been using trichlor pucks or dichlor shock, both of which contain CYA. NO more of either one of those. Your CYA is already too high. I also wouldn't advise using any cal-hypo. Your TA is high and your calcium hardness is getting up there. Those two being high can make the water cloudy. You don't need calcium in a vinyl pool anyway. I would just stick with bleach for your source of chlorine.

Especially since you have such high CYA and are going to have to run higher chlorine levels as a result, you need a good kit that can read chlorine over 5ppm. The one we recommend is the Taylor K-2006 or 2006C (same kit, larger bottle of some reagents). If you buy it through the Amazon link in my signature, the Pool Forum makes a little money on the sale which helps us keep this form online. Only buy if the seller is Amato Industries, however. Some other sellers are substituting the K-2005 which you do NOT want. If Amato isn't listed, wait a day or two and try again. They seem to restock pretty quickly when they sell out.

In the meantime, get a cheap OTO/Phenol Red kit (yellow and red drops) and use that. It will only have a chlorine scale to 5 (maybe 3) but you can force it to go higher with a dilution method explained here: Testing Without a Good Kit

You also need to work to bring your alk down. Two more guides for you to read:

Lowering Alkalinity Step-by-Step

Using Muriatic Acid Safely

Run your pump 24/7 and clean the filter as needed.

Keep us posted how things are going. Hope this helps.