I am just contemplating soils for a rescape of my high-tech tank and thinking about trying something different to my usual Amazonia. I want something that lasts a year or so without going too crumbly (as this scape needs to last for a bit), and which does not release too much ammonia on set-up. Anyone got an opinion on whether Africana or Malaya is better for this. I have read about Malaya giving off a dust in some past threads, is this still a problem? Thanks.