I use B1 from vegetation to finish bloom but I only use SuperThrive rooting clones and seedlings in a very week amounts. It's really for promoting root growth so they say. Once the roots are well established I don't think there is a need for it any longer. I don't think it will hurt but not real sure switching to just B1 is not better.

That's just a personal opinion.
Zandor Reviewed by Zandor on . Superthrive use Yesterday I picked up some Foxfarm Big Bloom and Tiger Bloom at a hydro shop. I asked the sales rep if it was ok to use Superthrive along with these products since I've been using it during vegging. He said sure and that it would be beneficial to the plants. I've read on another forum that it should not be used during the flowering period. Any opinions? Rating: 5