Mr.Miguardi said:

Hi guys!
After my first hemp grow harvested 2 weeks ago the result was quite good to be the first grow and i learned a lot of thing about plant, nutrient and RDWC cultivation (indoor).

In my second try i want to make a more refined feeding chart since i've learned that i can't 100% trust the official feeding chart from the producer website (ATAMI Bcuzz) that give me way too much K, low P and was too difficult to balance.
Searched a lot on the web and using Hydrobuddy i simulated all my nutrient (hydro A, B, Cal Mag, etc) and made this chart, basically i added a N booster and a P booster to better balance the NPK and Epsom Salt to provide S.
View attachment 1220023
* value are in ppm and EC values include EC of my plain water from the faucet

But if in my last grow i raised the EC to 1.6 in flowering with this NPK chart my EC don't go beyond 1.4 in veg and around 1.2/1.3 in bloom.
Can this be true or i'm risking to make a big mess? are EC only indicative since my ppm value should be optimal?
my simulation are based on the composition label of every nute i use so my EC might be different in real life.

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N1ghtL1ght said:

A few latest studies on cannabis nutrition suggest an increase in harvest mass by keeping nitrogen high during flower.
Phosphor only towards the end (last 2-3 weeks) and K increase was almost irrelevant.
That feedchart looks like it has used garden vegetables as its base.

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dbrzz said:

Are you sure you didn’t get that reversed? Most information I have is that potassium is more important than phosphorus in the flowering period towards the end, to support flower terpene production.

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