Hello @SugarDaddy ! What i only see at the video is a slight phosphorus deficiency. If its an aggressive progression then raise the bio bloom, if its a slow progression then you should not worry about it. If i was you because of my experience with bio bizz i would have definitely raised the bio bloom way earlier. Happy growing ! :facepunch:
Your feed and your plant is on point you do not have no kind of deficiency the only reason your bottom is turning YELLOW is the lack of light its getting thats all 99% of every plant will do this if you had the problems that are listed in this your plants wouldn't look as good as they do u got wat 4-5 leaves just clean em up and keep rolling homie i would change nothing :+1::+1::writing_hand::writing_hand::writing_hand::writing_hand:
The first 2 leaves on that video show clear symptons of potassium deficiency, the 3d leaf has shows phosphoroust deficiency. What your plant needs is more biobloom nutes and at this point, reduce or just stop using biogrow. There might be some over watering too, careful with that. I would increase the magnesium too, since you can see as some inter veinal yellowing (very little at this point), Epsom salts would be best, if not cal mag will do.