Search Al's Gritty Mix in the search field on this web site it will give you directions on how to make it hope this helps! :)

I use a variation of "Al's gritty mix". Mine consists of 1 part screened Turface, 1 part screened lava pebbles, and 2 parts #2 cherry stone chicken grit. I've had great success with this mix. I used to use just a 50/50 mx of Turface and grit, which also worked great, but the lava added some serious visual pizazz.

Joe