A substrate like this easier to find?
Soil, sand (filter or playground, I've used both), and Aquasoil (clay pebble-stuff) is okay but I wanted to go with something different. I've been looking at both Turface and Zeolite. And similar products made of the same stuff.
But the problem is that I want it to be very fine, like as close to sand particle size as possible. I can't find this size in any of these products locally except for a particular brand of zeolite but it's blueish-gray and not very natural looking, which is also a requirement. I want it to look like tiny pebbles/natural sand. But I want the exchange capacity that these type of products (zeolite/Turface/etc.) have.
Is there anything that fits my requirements that's widely available at say, Lowes or some other widely distributed chain store? The closest place that carries Turface in Greens Grade (the smallest size) is over 2 1/2 hours away. I'm not going to drive that distance for substrate!