5 week old clones; leaves closing - pics

I really tried to search the forums before posting this. Thanks for your help.

Overall the plant looks real healthy. Good color and good growth. There are new shoots all over. However, the leaves seem to be closing.

Sour Diesel clones potted 5.5 weeks ago

30 plants under 3 – air cooled 600W lights

canopy temps are 74. Humidity ranges from 45-60 depending on water cycle.

I tested the ph just before posting and its 6.9.

The lights were so cool due to air coming in from the outside that the lights were only 12” above the canopy (which I suspect might be the problem). Yesterday I moved the lights to 18”.

I use smart pots and water about every 2-3 days with a full gallon of water each.

I planted in FFOF and have used a minor bit of nutrients once, BioBizz Grow

The only leaves that are closing are the new ones. This is because they have not reached maturity yet. give it two weeks of just plain water. her are some more pointers. https://www.rollitup.org/marijuana-plant-problems/157345-have-plant-problem-check-here.html

haloman420 said:

The only leaves that are closing are the new ones. This is because they have not reached maturity yet. give it two weeks of just plain water. her are some more pointers. https://www.rollitup.org/marijuana-plant-problems/157345-have-plant-problem-check-here.html

Click to expand...

Never saw that link before, good pics (except for iron def.) Added that to faves.
I've always used this one, very similar and covers some other problems:


https://www.rollitup.org/marijuana-plant-problems/216537-self-diagnose-your-plants.html

your trippin