Thank you, Dirk, for the information.Thank you!
I will contact the pump tech and find more information about the pump.
Last night I filled up the acid tank with muriatic acid (I hope I did not mess up with it). I test the pool water today, and the result is here.
CYA: less than 30 (did not test it today it was from yesterday)
Salt level: 3,000
# What should I do now? Please suggest.
# The FC is too high. Right? Should I lower? If yes, how do I do that?
I appreciate all the help. Thank you so much.