LA friend, Gert is looking amazing, i made some research and found this in the web, hope is not crap info lol
Guide to EC Values for Plants Life Cycle
Example: Based on Water EC OF 0.0
So this means 0.0 would be the BASE Value, Most of us will never have 0.0, i have 0.6 as my base water EC. so i just imagine "0.6 is 0.0 and use this as a guide.
Seedlings, Early Sprouts.........100 ppm to 250 ppm--------0.2 ec - 0.5 ec
Early Vegging..........................300 ppm to 400 ppm--------0.6 ec - 0.8 ec
Full Vegetation........................450 ppm to 700 ppm--------0.9 ec - 1.4 ec
Early Blooming.........................750 ppm to 950 ppm--------1.5 ec - 1.9 ec
Full Mature Blooms..................1000 ppm to 1600 ppm------2.0 ec - 3.2 ec
pretty wide margins of error really muller ,just do everything by 0.1 increases/decreases and you shouldn't run into any problems that can't be solved.
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it would be great if some experienced growers share their thoughts about this info because i am planning on using it
cheers