A 600 watt would be impossible to cool in a 2x4. I run 600 watt with 300 cfm exhaust in a 4x4 in cooled basement. 2x4 would be putting Temps above 85. Not to mention the light intensity would be overkill.
That space would require two lights. 300/400 watts a piece would be more than enough...
Get a quality carbon filter or your neighbors will smell your grow. A good one will last 1.5 -2 years.
Paint the drywall and plywood with a semigloss 2 in 1 paint and primer. 2 coats maybe 3. That will seal everything from moisture.
A green plant is a growing plant. Give it time. Maybe the environment isnt optimized or the strain isn't as vigorous or speedy as the other person's. Either way plants will adjust as long as you don't kill them with too much water or salts.
In case it is fungal. One small scoop to 250ml water once or twice a week.
Also can be mixed with epsom later to treat magnesium or Sulphur deficiency.
I see magneisum deficiency in 2 of your photo. Magnisum is pulled from between the veins. Mild cases will look like number 3. Lime green from tip up into regions between veins. Calcium is more small spots and circles between veins. Phosphorus deficiency would not be confined within the...
How well does your soil drain? You said it has been raining alot. Was the wind high during these storms.
Maybe the dawn didn't work very well as an emulsifier? I've never used soap. When I need to apply a foliar for feeding I use green cure with it that has an excellent emulsifier in it...
We're these plants put outside recently? Sometimes a shock to the plant like sudden high heat and high wind or low humidity can cause burns like this. If the plants were babied their cells have not formed resistance to handle such a huge increase of wind sun and heat. Plants put their...
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What happened with your last goji f2? Did you cross to a sibling or outside genetics?
About half of my F2 became very mag hungry in veg and needed to be foliar fed.