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Have you tried a fan speed controller? You can match your exhaust with your intake.

Try pointy side up directly into potting soil at 1/2" depth.

24/0 lighting may help limit stretch.

Do you have heat sinks? Do you plan to use more than one driver? Without heat sink you may be limited to about 60W each board. An additional one or two boards in the center would be ideal, imho. Atreum has a nice 34" frame that holds 2-3 288 boards as well.

I think 65k lux is at the upper end, you may want to add CO2 if using that much light. Still, 40k is a lot of light, and if you can get that much evenly spread your plants will thrive.

They look fine, weeks to go, your only concern should be keeping your buds dry enough to avoid rot. They will become thicker if all goes well.

If you can use them as side lights, I think you've found the answer!

I assume the pots have proper drainage. It looks like some serious root issues. Maybe try to get a look at your roots, see if they are healthy. It looks pretty bad, might require repotting. Good luck!

Your plants look fine. Keep doing what you're doing until you see some brown stigmas, then check trichomes for maturity.

Outside, you can just remove the fans that turn yellow or defective. If you're trying for a certain number of colas, then trim or top early is best for training.

Looks like another 2-3 weeks, use the breeder claims as a guide, but your plants are stacking mass right now so don't chop early. You may consider removing some of those fan leaves to open up for light and air flow.

Most plants will not survive at 180 ppm, and 250 means you aren't getting air to your grow. Ambient CO2 in the atmosphere is right at 410 ppm. Your plants are using it up, and slow or no growth is the result. If your grow is in occupied space, you get CO2 for "free". I get 750- 1200 ppm in my...

7 weeks? It means about 9 weeks from start of flower. Lol

You may consider giving them more light, some plants appear to be stretching a lot. 30-35,000 lux or so at this stage. You won't need a net if you do some judicious topping.

Use your heater to keep your temp up during lights out. The day-night temperature spread you have can increase stretch, which may or may not be a benefit, but your ceiling height is limited. Also keep your small fans running 24/7.

I have found this company to be reliable: https://www.culinarysolvent.com/store/c1/store

Atreum also has nice led boards. It's Atreumlighting, I can't post the link for some reason.

Maybe take a look at your trichomes through a microscope see if the heads were knocked off during drying. They could also be immature? Just wild guesses...

Keep it and buy a new bigger tent. Or get a dimmable light like the Viparspectra PAR 450 or 600. ($188-223 at Amazon) These have dimmers for red, white, and blue light.

See if you can get some in 6500K.