Chronic Monster
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Here is something I found looking for a greenhouse management handbook.
The math might help.
http://books.google.com.mx/books?id=W0d8iAQx_UUC&pg=PA114&lpg=PA114&dq=calcium to magnesium ratio hydroponics&source=bl&ots=wz3F5eQwR1&sig=uLkYc3gfHHeXye7u99dVOREhcCU&hl=es-419&sa=X&ei=I1HIUtmhF6mI2wX4q4HoAg&ved=0CDAQ6AEwAA#v=onepage&q=calcium to magnesium ratio hydroponics&f=false
I find if I use the standard 4:1 Ca: Mg My leaves taco if I run below 60 ppm of Mg, I run lower ppms then most,this allows the plant to uptake more Ca. Also I floral spray at night which helps out my girls. A low feed at night with Ca. helps move the Ca. more into the plant.
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