Fluffy airy buds

Hey man! We all start somehwere nice set up and the buds look decent they will always get better if you make the right adjustments! As for your question airy buds can be a lot of different things, the most common is light, especially the red spectrum. I see you have 1 - 600 watt led in A 2x4 tent correct ? I think you need one more or another 300 watt. The only way you would be able to tell is a PAR meter. Expensive but almost essential to figure out your light power! My first try would be try lowering your lights a few more inches during flower stage and see if your buds get thicker on your next grow. also limiting your plants to almost directly under your lights might help because there will be considerably less light on the edges of your tent with just one light in there. Option two buy a PAR meter. It could be a lot of things though man we’d need a good diary to understand! Soil lights humidity temp watering can all affect the buds in the end. Good luck and happy growing.