Thanks, Max. Are you thinking of the nitrogen ammonia content of Amazonia over Africana/Malaya? Or did you read somewhere that iron is lower as well? I just know that Africana doesn't leach ammonia like Amazonia because it's less fortified with nutrients. But I'm curious as to the fired clay aspect in relation to iron? The ingredients is what gives the AS its color.
Anyways... my previous pics were mostly from a GS2, then a GS4, and sometimes with my GF's Canon Xsi DSLR.
No, I was talking about iron. You're right about the ammonia though. Even if it has less iron or other nutrients, you should be fine for a while. It's easy to start dosing it if needed.
Nope, they're all different.
There was a chart somewhere that compared iron content in all 4 soils too but I can't find it anymore ):
I just remember Africana and Malaya having significantly less iron than Amazonia, with Malaya having the lowest iron content.
Amazonia and Amazonia II are the most nutrient rich but I think that means they also leach more ammonia.
I have Malaya in my tank and it's more of a light desaturated brown color.