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Originally Posted by mawiwauiwithlabrador

I take no credit for writing these or copying the pages... pulled the images from somewhere, but based on some of the posts I've seen they may help some of you.

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Originally Posted by Roseman

PPM for Hanna Chart PPM


Seedlings, Early Sprouts 100 to 250

Early Vegging 300 to 400

Full Vegetation 450 to 700

Early Blooming 750 to 950

Full Mature Blooms 1000 to 1600

Note: EC Calculations are different, here's a conversion chart :
heres a great chart that shows how different PPM can be from meter to meter... EC is the only real universal language...

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