After several tests we concluded that Auto CBG-Force had consistently lower THC levels than photoperiod CBG-Force. Auto CBG-Force averaged 0.04% THC, whilst the photoperiod CBG-Force was closer to 0.14%. This is still well under the European legal limit of 0.2%. This may not seem like a significant difference, but for some growers in the legal system these ultra low THC levels are very reassuring. We think the higher THC levels in the photoperiod version may be due to the longer vegetative time available.