Mr. Blunt, everybody has to start somewhere. Sativa in a tent... it's a brave first grow in my opinion. Yours seem to be doing okay I hesitate to criticize because it is your first grow.
I'm not on my first grow and I happen to be growing some sativa that doesn't look as good as yours. I am...
I run a small tent with two plants in a room about the size of your room. My 6 inch 420 CFM fan and filter can barely control the odor in late flowering. I truly think you should consider a larger fan and filter.
I run deep water culture with a chiller. If you know that your Reservoir temperatures are never going to go above 70 degrees then you have options.
Once you start to get root rot you've got a problem. Ideally you never let it get started. I do that by having highly oxygenated water which...
I believe you need to decide whether you want to go with a sterile Reservoir or Reservoir with live beneficial bacteria in it such as Hydra guard would provide.
You can't do both so you would never use for example hydroguard with hydrogen peroxide.
Others will pop in soon I'll give you more...
How large of a space are you trying to grow in? Will you have separate vegetative and flowering areas? Or you growing for yourself only enough needed for yourself are you trying to profit? How many times a year do you intend to harvest? Soil or Hydroponics? What is your budget? How much time...
I don't find the reinforcement wire to be a problem. I generally snip each branch one at a time then do the three bucket wash, hang it to dry. By the time I'm finished cutting almost at the wire level or below and it's not really been a problem.
By the way this is amnesia lemon mostly sativa...
I use 2in x 4in square reinforcement wire and it works pretty well for me. It's stiff enough to hold down the colas horizontally growing where I want them to go. But the problem I have scrogging is two different strains one that grows ridiculously faster than the other. In my current grow I'm...
I am also 3 weeks into flowering some amnesia lemon haze. Trying to scrog but half my tent is dwc and half soil. My canopy is not very even.
You might try to LST your tallest cola 's to allow your lights to be not more than 24" above your lowest bud sites.
More scrog.
2 month old mother under scrog in soil along with clone of that mother going crazy in bubble tub.
A very busy 32 inch by 32 inch by 5 foot tent.