The grow is looking great.
i have a few questions?
What is your ph?
ideal ph is around 5.5 - 5.8
how high are you lights from the top of the plants?
Do you have a way to adjust the light height?
How do you plan on controlling the smell of your plants?
because they will get STRONG aroma to them.
what is your water temperature?
with a DWC system you want the water to be around 65 to 68 degrees.
you may have to freeze 2liters full of water and drop them in daily

i know its a pain in the ass, but if the water gets too hot you could get root rot.
I am currently using a DWC system with a 55gal res. i could not cool the water sufficently with bottles so i had to drop $400 on a chiller, but now i can cool the water to a constant 55 degrees.
before i got my chiller, my water was 89 degrees under 2-600watt light, and my roots were yellow-brown and they looked collapsed. i used some "AquaShield" and it work perfectly, my roots were a bright white color and healthy
P.s. any kind of pump in the res will add heat to the water...
your air pumps pump air through your water, if the air is 80 degrees those pimps are pumping 80 degree air through your air stones in your res causing the water to heat up quicker.
also those plant will start to drink a lot of water(1 gal a day) so you could fill to res to the second or third circular supports on the net pots. it is good to cover all the roots with water. or they could dry out
also ideal ph for the res is 5.5-5.8.
For your next grow, maybe this one. look into the method SCROG (Screen of Green) growing. I think it would be perfect for your setup.
Grow is looking GREAT, keep it up
Ill be following your grow
Stay hazed
