Introduction of co2

Hello fellow horticulturalists!!

I have a little grow on the go & this weekend I am introducing co2 on a unis system.

The ppm is not really concerning me but the extraction rate, temp & nutes are!

I am using the complete canna grow system & have pretty much halved the rec dose all thru to where I am now which is one week into 12/12.

Any advice would be greatly appreciated.

Oh and just had to strip 2 4 footers because they had balls:cry:
 
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