i read about this in 'maximum yield' and i talked to the ppl at my local hydro store and they showed me tomatoe plants with and without and the diffrence is very noticeable,for the better!!!BUT.....if not used and introduced to the plant properly results can be devastating,well not that bad but some plants wont recover or should i say are'nt worth the time to wait to recover.i've always ment to get some but just procrastinate when it comes down to it,lol.also i see it as what im doing now is just fine enough for me at this point but i guess i've waited to see it pop up on hear and see how it works on the sacred plant of plants but i dont think im seeing enough ya's to go out and buy it just yet,lol.......but again ive seeing it on tomatoe plants and it worked well on them so....?...............peace,ras