Just hit 6 weeks, do they look smaller than they s...

Hi there! Cool looking setup and plant you have here! A few things that I notice....first, you have a canopy that is pretty open -- you should not be having any issues with light penetration here. Second, I agree with Bulbi that you have a low output light. HIDs are great and often better performing than LEDs, but 150W is not a terribly powerful light. You might have better success with a cheap 300W LED in terms of coverage and output. If you want to stick with HID, you might want to consider upping your wattage. Thirdly, I notice in one of our photos that your room temp is around 72/73 degrees F. From adjusting my environment the past year, I've found that keeping your environment closer to 80 degrees F is usually better -- plants tend to respond better. You also need to balance out the light distance -- if you have a cheap laser thermometer ($15 on Amazon), you can check your canopy temps. I usually shoot for around 78 degrees at the top of my canopy. That will help you determine if your light is too close or too far. While 72 degrees F might produce a plant, it's not usually ideal temps for a plant that most frequently grows naturally in high temp places. I'd say adjust your room temp to get it a bit warmer, and look into a bit more power for lights. You could even consider getting some warm (~2700k) lightbulbs to help you get a bit more light for this grow. Best of luck! Let us know how things go!