> Does anyone have experience with this? I just got some and it looks great,
> but I don't think it releases iron, so I may need an amendment. Any suggestions?
Have you considered putting a layer of granulated iron supplement to the bottom of
the tank prior to adding the substrate?
I did this with my tank and it seems to be running just fine. In fact, I will
probably do ten times as much to my next tank. It has 3-4" of 50/50 profile and
Flourite. Deep enough that it would take serious effort to release much of the
nutrients to the water column.