substrate fertilizing with liquid ferts.
I'm thinking about a large blackwater south American tank but would like to have it fairly heavily planted. I have been thinking about a deep substrate that is layered with a bottom layer of safe t sorb with a system of lines running through it so that I can dose my ferts to the soil and not to the water column. I'm just spit balling ideas at this time so what does everyone think. when I read up on blackwater species they keep talking about how low in nutrients the water is in these locales. has anyone kept a blackwater well planted tank using fert dosing? I'm just looking for ideas as this tank is probably at least a year in the future, but I am getting pretty wound up over a large planted blackwater tank even though it is at least somewhat of an oxymoron. feel free to give any and all advise. thanks, steve