i had lava rock in my tank once,looked quite good,even though
i didn't really have enough of it,my loaches loved it,the shrimp loved it,
they were forever picking algae from there.
i think the only thing i didn't like was how rough it was,i worried that
the fish would possibly injure themselves,but no one ever did.
dug out this old
picture,thinking back if i had waited for the plants to
fill out more,and added rock each week,i would have probably liked it more,however
i'm no good at waiting at all.