Mineralized Topsoil Q
So I'm starting to make some mineralized top soil for a 2.5 gallon emersed planted tank I'm bringing to college with me. I've got the top soil, and I've got the dolomite (actually oolite or some other crushed carbonate sand I used in my reef tanks). However, I'm not sure where to find KCl, nor iron rich clay. Where would I go about finding these things in person? What brands do you recommend?
I found this red clay, "Amaco Mexican Self-hardening clay" on the walmart site, does anybody have +- reviews for it? KCl, I can understand, but dirt...dirt, I just don't understand at all!
The topsoil I got said it had sphagnum moss, as well as composted wood products. Is that okay?
Finally, my mom told me to get a bag of vermiculite. Should I incorporate it since it's so good for land plants?
So many fish/plants/inverts to keep, not enough aquaria.