Doe's anyone use this product?
2ml of B-52 per 1L of RO water give's me 300ppm.
I don't know but i presume 300ppm of B vitamins is quite a bit?
Uh... well, I'm not sure what to say about your ppM meter but I think it *might* be a little off. My first week of veg nutes has (in 50 litres of water) 20 ml of a 2 part veg nute, 60ml of b-52, 40ml of fulvic, 70 ml of voodoo juice and some others... this is mixed into tap water that's been sitting for 24 hours.. and my ppm is under 220.
So, that being said, i would recalibrate your meter and check again. I don't see how that can be right. At any rate, your poster below about b-1 is probably much better off than both of us. I bought the b-52 because I wanted to fool around with kelp and b-vitamins to see if I could notice any difference... nothing so far but, we'll see. Good luck.