Lava rock in gritty mix
I'm interested to know where lava pebbles rank as an ingredient for a gritty mix variant. Right now I use turface and grit, in equal parts, but wonder if lava rock pebbles can be mixed in, mainly for athstetic reasons. I have liked the look of it since seeing Josh's (greenman) mixes. Also, lava pebbles are lighter in weight compared to both turface and grit, which would be great for bigger pots.
With that said, is it feasible to use lava rock, and what kind of moisture retention does it have compared to turface and grit?
Also, at what ratio would it work best in conjunction with turface and grit, to maintain similar moisture levels?
This post was edited by Joe1980 on Mon, Jun 2, 14 at 9:30