Thanks for your post. This will sound really dumb, but I didn't even realize that I don't need to SLAM if it's a fresh fill. I'm so used to doing it every year when I open the pool that I didn't even think about it. What is the best way for me to proceed? Should I start by dissolving CYA and adding some bleach? I assume that I want the CYA steady before turning on the SWG. Thanks again.
I'm assuming you want it swimmable in a hurry, maybe some whiny kids begging to get in.
Test pH, TA, and CH. You know that tap water has no CYA and very little FC and any it does have will be gone in an hour.
First you raise FC to 3 with bleach. Or get pH to 7.2>7.8. Doesn't really matter which.
Next you Measure out enough CYA to get to 60, unless you're absolutely positive about your pool's volume. Then you can aim for 70. Put in into hole-less socks or nylons and tie it shut and set it in the skimmer or dangle it in front of a return so lots of water hits it.
Step three is to fix FC or pH whichever you didn't do already. The first chemical had plenty of time to mix while you were fumbling with the CYA.
Step four, let the kids in.
You'll need to add bleach every day and as the sock dissolves, raise FC. It's straight math -- if half the sock is gone, CYA is half your target and you use that number in the [FC/CYA]chart [/FC/CYA]to pick your new target. Remember you're a bleach pool at the moment.
You'll be testing things (except CYA) daily and trying to get everything balanced. A day after the CYA is all dissolved, you can test it and make sure you reached target. Any time in there you can add salt. It's more fun to let the kids in while you do it. They'll mix it up great and have a blast.
When the CYA and salt are all dissolved, you can stop with the bleach and turn on the SWG.