Well ive sorted my problems guys, bought my canna range today, and followed the canna grow guide, the guide asks for your ppms exactly what your using then calculates exactly how much to feed, overall with my water included the guide said i should have a ppm reading of 705, thats just over 1.0 ec = 640ppm in europe.. anyway i did the exact measurements with my 105ppm water and lord behold the ppm reading came back at exactly 705ppm, bang on, and my ph was at 6.5, i literally only had to dip my syringe in the ph down and mix it and the ph dropped to 5.5 which im sure will rise overnight before i do my first feed.
I cant belive how accruate the grow guide is if you manually enter in all your calculations, lets see if canna lives upto its name, its certainly very accurate when knowing the ppm after adding the requested amount of solution, the thing that made me laugh is the reccomemded dose on the bottle is double that of the grow guide.