well, almost done. initial framework went in perfect...HOWEVER...i should have known it wouldn't be all smooth sailing. after a lot of time researching, along with checking out whatever images i could find on google of paludariums, terrariums and vivariums, we decided to go with 'great stuff' as a divider between the land and the water side, as well as a sealant in certain spots (along with DAP 100% silicone aquarium safe DAP Products - Silicone Sealants - DAP® Household/Aquarium Adhesive Sealant).