Sorry for bumping this, but i just finished reading and it was so interesting

that I want to use it in my new Low Tech setup (220 liters)
I am just not sure HC is suited for Low-Tech-
Excel tanks...
So just to be sure of this method:
1) Can I use HC or better stick to low-tech grass, like Marsilea Minuta?
2) Can this method be used with 1 inch of natural substrate (humus, peat, etc) and 2 inches of Eco-Complete on top?
3) Can I plant additional plants in the dry era, such as crypts, anubias, java fern (mainly low-tech suited plants)?
Ragards,
O