Need a consultant

Strain: White Widow and AK47
Method: Hydroponic drip with Rockwool cubes.
I have a drip system with reservoir wich collects the runoff.
After I put in the nutrients I’m around 6,5 in PH, adjusted down to 5,5.
EC: 1,3 (measured now after 2 days of running the same mix.
Indoor tent, 80x80cm
Lights: Lumatec Attic 200w
Temperature: in tent 29C, reservoir 23,9C, RH: 40%
Outside humidity 25%
Fan and filter, not sure the capacity, but seems sufficient
Regular humidifier, will try to set it up with an auto refill pump from tank
No CO2 system

Grow journal:

I also have an air pump with an airstone. I know this is needed for a DWC system, but do I need to run it for my setup? Continously?