I'm abroad (South America) that's the problem. And the filo-fascist Government here restricts access to everything foreign, both currency and imported products. So all the good stuff I see here (from seeds, to cloning gel, led lights, fertilizers) makes for wonderful eye candy but is out my reach.
My take out from this is simply to try and find a source of silica to add to my compost (which I make from grass clippings, kitchen refuse and such). Apparently volcanic ash is rich in silica, and back in April of this year there was a volcanic ash storm South of the country, so I'm gonna try to get some and mix it in.