1.5 lb bag x 3 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 to replace clay products
in bonsai soil. It is very low acid to help balance soil PH. Has a kitty litter type look with a grey/moss tint of colour. (not exactly as pictured)
