White Widow Auto, 2nd Aerogarden grow

The tips of the leaves browned a bit this week. I think the PH dropped too low. I checked a few times throughout the week: at first it was at 7.2, so i brought it down to a 6.5, and it was around 6 mid to late week. Now it’s water changing day, and suddenly it’s 4.9! This happened around the same time on my first grow, so I’m assuming the plant naturally drops the PH when it enters flowering stage? I’ll make sure to monitor it more closely next week. Otherwise everything went well. It doesn’t seem like there will be a need for further LSTing. Now the ladybugs and I get to enjoy watching the buds fatten!