Awesome man i been wondering all week how they where going! those roots look very good thick and strong there indi feeders those big fat fuckers!

.
Okies man ,letting the water like run low or keeping it low some do in flower to increase oil production. however i see this kind of like taking leaves off. totally counter productive .others sometimes feel differently so you'll pretty much have to make up your own mind on that one.
Your also right about waiting until full bloom for flowering nutes.pre flower isn't actually flower and the extra N can be used for there full stretch which there doing right now. so expect them to double or more in size now

Top job man

Your also helping me to prove air doesn't hurt roots like people think it does .like in that video those roots are not at all phased by your airstones even laying on them and growing around them almost ,Light bulbs people!

hahahaha air is super gentle!!