Check out BIO-GENSIS products they are all Organic with the OMRI label on the bottles...

BIO-GENSIS "Synergy" Platy stimulator has worked wonders for me.. It has killed superthrive in performance and is only 5 bucks more. But you use more than a drop or two.. So i guess its a bit more expensive But the differences I have noticed have made it totally worth the extra cash.

kd