That is a hard question for me to answer as I just started using additives such as Koolbloom and florishous plus. We grew for almost 2 years straight before starting additives. Just sticking to GH 3-part for so long gave me a great chance to learn how to grow in my setups and get familiar with the strain. I just checked with the master trimmer/weigher (Girlfriend ) and she said atm roughly 2oz dried per plant but that is increasing do to the additives. Next grow will see the addition of dry Koolbloom along with liquid version and we will see how that goes. This is only the 2nd run in the basement and from what I can see the biggest yeild yet so we will see what happens to the average.