What I wanna see is a battle of Miracle Gro OGPM vs Activ Flora black. Now I know the dirt would probably whoop Activ's a$$, but still I'd wanna see how it fares against the dirt giant. Oh, and a sand or gravel substrate as a control, if anyone has the stuff to do this please make it happen :P.
I just have the one 180litre tank heavily planted and already setup, it's gone through three different substrates over the years. Now running JBL Aquabasis plus with Manado as a cap, but after reading this thread I WANT Activ Flora!! Just don't know where to start looking for it :-/.