I would have to agree that Superthrive is complete hype. I wouldn't say it's completely useless, there are after all several ingredients in common with pretty much any other fertilizer out there. But it's just not remotely what they say it is.

On the other hand, one over-marketed product that isn't good doesn't make the other products bad whether they're over-marketed or not. Many people argue that Advanced Nutrients is marketed too heavily, for example. In my experience I've found that their products, at least the ones I've used, are pretty impressive.

The marketing can be dialed up to 10 whether the product is good or not. Just don't lump them all in together is all I'm saying.