Yes, used and hooked on it, at least I have been happy with my yields after started using it....
Its just that then I haven't been able to do the peak PK time with Buddhas three PK 9/18 ,which has been my other favorite since found it..
..meaning I have been using Buddhas Three as instructed with 0.25ml/liter until the 6 week, which is the point where you should pump it up for 0.5 ml/liter for one week...it's just that the AN Overdrive should start at that time and you can't use 2 PK product on the same time...but because the yields have been so nice with the Overdrive, I rather have just emptied the tanks and added the Overdrive and basic nutes to get the desired EC reading...but no complains there...yields have been a success after that...so yep go for it ,its not expensive , but do use some other PK in moderate dose few week until the last 3 weeks starts and the use Overdrive..