I'm looking into the "Amano" approach to substrates.
He uses his own product called power sand, which I think most of you are familiar of, but probably have never used it since it isn't available in N. America.
. Basically it is primarily composed of peat and pumice with a few other additives. It is most commonly used as the bottom layer, usually placed under Aqua Soil (another ADA product?), or some other baked clay substrate like fluorite. I found this quote on another forum talking about it benefits:
...semi-organic mix with mostly pumice and peat. The combination is powerful in that you establish a nutrient storehouse that can recycle nutrients and provide an optimum [acidic] environment in the substrate solution.
And of course, Amano uses it so it must be good.
Just wondering if anyone has tried making their own power sand or know of any sites that provide the how to.