Add half the amount, let the pump run for 30 mins. Retest and go from there. You are still learning so it is a good idea to go slow so you can learn how your water reacts to everything.
DO take over your pool care. Don't say anything to the PB though. Just do what you need to do after they do nothing. They will not notice you are doing anything so it is all good.
DO take over your pool care. Don't say anything to the PB though. Just do what you need to do after they do nothing. They will not notice you are doing anything so it is all good.