my O. scyallarus (pretty sure I botched the spelling on that one) has dug her way down to the glass bottom. I've got about 3"-4" of sand (mixed of fine oolitic to FL broken shells). she's using the glass as an anvil to crack hermits open, and is making me more than a might uncomfortable with the though of 20 gallons of tank on the floor. If I put her in a holding container and put a PVC pipe into her lair (which is under the biggest rock in the tank) would she go for it or am I SOL? I was planning on getting a 45deg elbow for it, and having it T in the back.