Hi guys, you will need a digital EC METER PEN, and also a digital PH tester pen. Here is the chart I used with canna.....http://www.canna-uk.com/electrical-conductivity
My Auto's are plodding on just fine, I wish my AK47'S would grow a little faster but I am comparing them to my other plants which are being grown under a much more powerful light, and I should be more patient.
Orty
like 1