1.5 lb Zeolite is a very popular bonsai soil additive.
it is lightweight and granular. Lots of folks mix
it with Lava/Pumice and Bark to make a well balanced
soil that drains really well. It is often used instead of a
clay product. Its very low acid to help balance your soil PH.
Looks kitty litty -like but with a grey/moss tint of colour.
Not exactly as shown.
