When you have nitrogen toxicity at 15th day of flower does the plant have enough time to repair? or will i get fluffy buds? flushed with 7-12 gallons of 6.0 PH water per plant at 19 degrees. Next day with lights out I sprayed pro silicate. Should I do anything else?
Yes it wil recover and there is nothing else to do.
Additionally, you may consider defoliating the plant by taking out the biggest fan leaves. This will help the penetration of the light and as a result: More buds.
Hope this helps