been running it for almost 2 years. depending on how many plants you run, buy the boost, bloom, sugardaddy by the gallon! it will save you money in the long run. I don't use veg nutes, as I run FFOF soil, and its got plenty up until flip time.
I also don't use the recommended feed/water/water/reed regimen as technaflora suggests. I do feed/feed/water and vacuum out ALL overflow in my tray. I can get more waterings/feedings in this way and my plants love it.