Here are my numbers. So can I put in bleach, borax (or washing soda or soda ash), baking soda, and CYA all at the same time? If not which do I do first, second, third, and fourth? I'd like to kill the algae asap so can I start SLAM yet?
CL: .5
PH 6.8
CYA: none
CH: 100 ppm
TA: 30
First, take a picture and post it for our edification. Do a good job and you might end up in my Inspirational Threads list.
Then, if you have washing soda/soda ash/pH up laying around, use that to raise pH. If not, use Borax to raise pH and deal with the low TA afterwards. You have a vinyl pool, so etching the plaster is not a concern.
Third, weigh out enough CYA to get to 30. Put int in a sock and set it in the skimmer or hang it in front of a return.
Fourth, thirty minutes after adjusting pH, recheck it. You might need a second dose of whatever to get it up to 7.2, since you're off the bottom of the scale. Recheck that again in 30 minutes.
When the pH is up, jugs away. Target 12 FC since your CYA will be 30 soon enough. If the pool is pig filthy and scary black, the small excess won't last very long. And then keep checking and adjusting FC up to 12 every hour or two. Once it stops losing the majority of the FC in that time, you can stretch the interval out a little. But the more consistent you are, the faster it will clear.
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So I put in all my numbers in Pool Math and it says use 10 for SLAM. I choose bleach 121oz. does that mean use 10 bottles?
No. The target is parts per million. Use 12 as your target, since you'll have added some CYA as noted in my earlier reply. The dose is given in ounces, but conveniently poolmath tells you how many jugs that is in case you want to just eyeball it. I see it says 3.9 jugs. Might as well dump 4 the first time, because by the time you're done dribbling the first 3.9 jugs in and rinsing the empties to get every drop, that extra will be used up.