I have that same product in 6 of my own tanks.. and as a matter of fact i just planted some dhg in a couple established tanks and after the submerged transition its started to spread.
P.S. this stuff packs in such a way that i found a 6 month old seachem root tab almost entirely intact, away from the plants. I rely on animals like trumpet snails and cory cats to stir things up or roots will build up above the soil after a while.
Might be different when used over topsoil, mts, mg, etc...
Last edited by steven p; 08-07-2012 at 06:29 AM.
Reason: some liner notes