the distilled was probably 6.0 ph so hopefully you will see some improvement....

but,

I would make the trip to a hydro shop and get: ph down, ph drop kit, and foxfarm nutes. The results will be worth it and everything will go smooth. Not that miracle grow won't get you some bud but 20,20,20 is way too much N for flowering and could easily be the problem here. foxfarm is 2-8-4. This is why your nitro is really high and why potassium isn't high enough. could of been from ph poblems as well. Just remember to water with 6.5 ph water (after nutes) and only when the pot is fully dry.

good luck