Wedding Cake Auto

Just to get this out of the way, all of my plants were exposed to and received the same amount of sun, water, and neuts. I had 3 of them and, each one looked completely different while in flower. I was extremely disappointed with one of the plants (Plant Y)! It had barely any frost, and the buds were airy, with almost no density at all. The other 2 weren't nearly as frosty as I'd like and, despite having milky and some amber trichomes this isn't the potency I was looking for.