Ok. I'm back from Sams/Walmart. I didn't put in any chemicals today....just did a good vac. I bought 6 gallons of 8.25% bleach, and an OTO test kit. Ph is reading 7.2 and chlorine is barely registering. Looks like about 0.5
I'm going to put the bleach in now. How long should I wait to retest?

And does water temp matter? It's still a bit chilly.