few questions with pics – first grow – pH trouble

hi everyone, been reading for the past few weeks and was motivated to try and grow in my Aerogarden - which I am learning may not have been the best choice. However, I'm about 10 days in and here's where I've gone I sprouted a few seeds I was given by a friend using paper towels in plates He said some he thought were indica and some were sativa but he had no strain names for them. I recently received my pH reader and now am trying to combat a rising pH level... I will use pH down to br