Sweet looking rig , good luck !

I'm using the 3 gal buckets right now. This is my first grow in coco with dry amendments and a few additional top feed liquid amendments. Only have one other grow under my belt about 15 years ago DWC. I'm in a 3x5 tent using one Electric Sky 300 LED.

I love the buckets form factor, and am currently using the bottom drains, but had some issues with the manifold lines leaking using the supplied 3/4 inch funny hose. I ended up removing the water line and manifolds and am hand watering for now. Once I reset the grow tent, I'll be installing pvc piping.

I'd love your thoughts on my current grow since you have extensive experience growing in coco. I'm using Dr. Earth dry amendments, and have had to supplement with Botanicare Cal/Mag due to some early magnesium deficiencies. Also supplemented with Botanicare Silica and Pure Blend Tea.

I just flipped to flower 2 days ago, because I only have about 10 weeks before I am out of town for a month. The girls seem healthy and vigorous up to this point, but tops look a little light colored. Not sure if it's light bleaching or some type of deficiency. Lower leaves are darker green. Any advice would be greatly appreciated.

That top right corner plant is about 2 weeks behind the rest. I lost my first seedling and decided to go with just 5 plants, but then decided I wanted to scrog this grow, so popped a new seedling :)