Pineapple Auto- (first ever grow)

day 45- noticed cal mag deficiency in Vivosun plant- gave 1 tbsp/gallon of calmag and will be including half doseage of what is on the bottle with all upcoming feedings. Feeding/Water: Switching from using RO water to collected rain water while I have it. Still following fox farms instructions but cutting in half and feeding every other water (every 2 days pretty consistantly) Vivosun plant is surprising it was late to pop and has been runty the whole time, but flowered first and has caught up in size to the Vivosun plant just about. Am doing selective defol, but don't want to over due it as this is my first grow. I left more small sites on the vivosun just to try two different styles on this first grow and because that plant was twice as bushy as the Vivosun, not sure if that is why flowering took off on the Vivosun light plant quicker.