After more research, I don't really need this. I'm providing plenty of cal and mag via the dry amendments during top dress. It works fine for what it is.
Works well, although I suspect it was too little, too late for the autoflowers in this grow. Next grow will have some pre-mixed into the soil and hopefully more readily available for the plant without burning it.
Great strain for my first time growing autoflowers! Easy to grow but you really need to be attentive to the plant's needs as you have less leeway with autos. In hindsight, I should've topped this plant in addition to LST since I only have a 36" tall grow tent and could've better utilized the available canopy space for a better yield.
@BruceBanner868, search etsy.com for "plant trainer" or "plant bender". If you have a 3d printer or access to one, there are several free plans on thingiverse. Good luck!