lace

so i just tried to use lace rock for the first time, and i think i want to finish it up to the top of the tank.. does anybody know where to get some? i know it could be relatively cheap compared to other rocks.. do any of you get lace rocks from quarries? or landscaping / nurseries?

I bought a Madagascar Lace (Aponogeton madagascariensis) plant at the ECC auction a few weeks ago. I put it in the tank and slowly the leaves melted. This is my fourth bulb, melting leaves has happened every time. I wiped the mold off the bulb and smelled it for rot, then returned the bulb to...