Quote Originally Posted by Puffzter
Word.

The main thing people are missing when growing is what plants actually need and are made up of.
It's easy to think that it's all about sufficient light and then its all about best nutes.
Not true!
The overwelmingly biggest nute a plant can get is CO2 because they are mainly made up of carbon like all living things (not counting water but water is a distribution medium not plant matter) and for a plant ALL of it comes from the air.
So everything we do is to make it easier for the plants to "eat" more CO2 from the air, how?

Nutes: Are important because it adds stuff needed for that process to take place but you cap a plants nute uptake very easilly.
Light: The more light you add the more CO2 a plant can use. So thats why more is always better if temperature is ok. You can cap light also but not very easilly.
Fresh air: Together with light something you just can't get too much of more or less. Every grow room should be viewed with this in mind.
How does your air move through the room? You want fresh air to come in low, move to the centre of the plants and THEN get sucked up through the canopy. Try to keep exhaust intake central in a position to make this possible. I use computer fans at the intake to get the fresh air fast into the centre of the room before heat and exhaust fan drags it up through the canopy for exemple. In a system where CO2 is added other rules applies ofc.

Anyway... The by far most important thing for good yeilds and quality is to make it possible for the plants to keep this process going as good as possible and that you do by realising that light is more important than air circulation which in it's turn is more important than nutes.
Both light and CO2 supply are bottle necks, nutes are not. It's very easy to give a plant enough nutes.

Your HPS made your bottle neck much wider and thats's why you see those results. It's all about widening those bottle necks.

Sorry for the rambling, was bored and kinda like writing hehe.
Really looking forward to your results m8, good job.

Puffzter
And increasing the airflow from 50 CFM to 70 and lastly to 90 definitely widened another such bottle neck. :hippy: