First foray into this sort of thing, and I'd like to think I'm doing something a bit different from most people. As far as I can tell from searching very few people have done a dirted blackwater tank, with the intention of heavily planting it.
Obviously I'm going all low light stuff, due to the darker water colour, but I think I can get a fair variety of things in here. I also won't be running CO2. Looking for suggestions as well.
The basic set up is this:
-75G Rimless Deep Blue with centre overflow
-30G Long sump
-Eheim Classic 600/2217 filter (on sump)
-2x 200w Cobalt Neo-Therm Heaters
-Cobalt MJ-600 (for the sump to re-circulate the water)
-MaxSpect Razor R420r 160w 10000K (not on there yet, it's on order)
I used 1-1.5" of Miracle Gro Organic Potting Soil, with a couple rises in a corner and a small mound to one side to break up the flatness. I also mixed in about 6L of peat moss into the soil and 6L of ADA Amazonia Soil.
On top of that is a mix of Seachem's Black Fluorite and Onyx Sand.
In the next couple weeks, I'll be putting some leaf litter on the bottom.
There is a healthy helping of peat moss in the filter as well.
As of right now, I have Echinodorus Amazonicus, Java Fern 'Windelov', some unknown Java Fern variety, Cryptocoryne ciliata, Crytocoryne usteriana and some Russian Moss Balls broken up and covering a piece of wood. I'll be putting some java moss in the sump and I'm expecting some Red Cobomba from a friend this week. I may attempt Crinum natans in the future as well.
The pH is holding around 6.4 right now, but I expect it to drop down to roughly 5.5 with time. I haven't finalized what fish I'll be putting in, but there's going to be a fair variety.