Sorry for my brain farts. Luckily I have Shed to remind me of things I read and inadvertently disregard. Have you thought about adding in a flowering additive for some Potassium or maybe you could, cause I think I saw, correct me if I'm wrong, that you're using 2 or 5ml of Kelpful? If you're using 2, use 5 if you're using 5 use 7.5. I do that for some plants during flower who need the extra
Edit...sometimes I have even used 10ml of Kelpful.....Spicoli because of her size I distinctly remember doing that. Plus I have the Flower Stacker....plus I do the monthly dry toppings...so just throwing those options out there, too