Nutrient Additive: Hammerhead PK9/18

Hey been checking some additives on the net and ive come across one call Hammerhead PK9/18. Apparently this stuff is much better than PK 13/14 but i cant find any reviews about it anywhere, just wondering if anyone on here has used it and whats it like.
Cheers

i don't know if this will help but i use a supplement called phat bloom from austrila this shit is crazy you use it in week 2 and 3 my shit got about 6 times bigger in those 2 weeks.my plants look like at 3 weeks what my last crop looked like at about week 7.and my strains are 9 weekers.i would guess i will double my harvest this time.i do not work for them.i just saw the post and though i would share some good info on a product.i've been doing this for a long time.and this shit is sick.a liter is 120.00 but it makes 200 gal.this bottle will last a long time for me.hope this helps take some guess work out of hunting for shit that works.peace happy growing