Originally Posted by HARDDON
No bat guano from mexico on a commercial aircraft!
And, always wear a mask when fucking with it :)
Make sure the lava rock is the red / rusty kind. The black rock is absent iron and some other shit I don't remember.
Also, its GREAT to take some rock and bash it with a hammer in a pillow case. It creats a lot of dust and that dust is wonderful mixed into the soil :)
Makes BIG BUDS in my opinion :)
Soak the red rock in proper water overnight before you use it for the first time....it penetrates millions of pores and won't dry out your grow from the first water.