The amazing Avatar-themed aquarium by Leonard Ho | Aug 9, 2013 | Advanced Aquarist | 0 commentsTo spoil the magic: The waterfall effect is actually fine sand cascading down. Clever and ridiculously beautiful! Facebook Twitter Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment *Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Δ