Kelp and Nutrient for early flowering advice.

High, yes you can certainly using kelp spray during flower. It's also in basically every common booster and nutrient line. It's beneficial during flower and increases growth rates, rooting, and bud quality. It's one of the few scientifically proven boosters out there. Kelp is organic and full of micronutrients. I've use kelp in about all its forms in my gardens, cannabis and not. If you are using any bloom boosters or anything like that? Then you might already be using it too. Kelp is great and cannabis plants love it in all stages of life. Happy Holiday!

I agree with Ezzjaybruh, plus don't want any foliar of any kind on younger flower sites. But yes as a soil drench a+ I like how your plants are looking as well, its good that you have been using less nutrients with autos. Good luck with the rest of your grow!