Hi, I just learned the dangers of walnut shells and wanted to switch to the bio dude terra sahara. I bought enough to fill the bottom of my 90 gallon, the bottom is the size of a 75. I did not know this was a living substrate, do I have to do the bio activeness of it? Like with the springtails and everything else or can I just leave it dry? Also where can I find all the other stuff to get started, I have it all on amazon or bio dudes website but don't know if there is a better source, if the living stuff is required.