Just picked up a new Derasa.....I have struggled with clams in the past but I figured I would give them a second try. My biggest issue has always been placement. Can I just place it on the sandbed? No matter what I did in the past, it seemed to be tipped over by morning. Do they attach their foot on the sand itself or bury it down to the glass bottom? How do I keep it from tipping over? I have tried using PVC cut in half, placing rock on both sides of it, etc with no luck.

