You will find that the lava rock won't wick well, and will hold onto salts
and not flush well.

Other than that, it's OK/

--

Ray Barkalow - First Rays Orchids - www.firstrays.com
Plants, Supplies. Books, Artwork, and lots of Free Info!


"BruceM" wrote in message
news
Having just recently been suckered into getting more orchids (Cattleya's
and Dendobiums) at Wal Mart......... I have noticed these from Wal mart
are usaually in a 3 inch square pot Volcanic rock and newspaper. Are
there any advantages to Volcanic rock, other than it is cheap and
plentifull in Hwaii.

My reading research shows it holds water well. Will it wick water? The
thought of using it like Prime agra for hydroponic has crossed my mind