respond

Was trying the online chat but can't respond the girl asked what she could help with but I don't know where to respond. My question would have been white widow fem that I'm growing wanted to know the time they say is there flower time

Just like the title asks...... Assume you have had a high PH soil for the past couple of weeks. You adjusted the feed to bring the soil PH down to the proper level. How long does it take for the plants to respond to the correct PH and end any nutrient lockout?