Yup I use it from the first week of veg thru the first 3 weeks of flowering(per house and gardens schedule). And I've never seen root rot...On the house and garden website you can pull up a PDF data sheet on each one of their products.

With the combination of ROOTS EXCELURATOR and Aurora Innovations ROOTS ORGANICS OREGONISM XL(beneficial bacteria's) I've had clones in the past w/ roots thicker than overcooked spaghetti noodles, under flourescent shop lights no less. imho I think it's a great start for a huge and well developed root structure, which equates to bigger yields...

D:S5:

still nobody has any ideas on a good strain for the outdoor hydro attempt of '09