I don't know why but for some reason the thought of building different structures out of Lego for use in an aquarium popped into my head... I checked it out and could not find any photos, but according to the people at Lego it is totally safe to do....
7) Is LEGO® safe in an aquarium for both the fish inhabitants and LEGO®?
After consultation with The Lego Company, it is indeed safe for all concerned. LEGO® is comprised of a very stable inert hard plastic and will therefore not breakdown in an aquarium environment.
http://www.vlc.ca/faq.php
This could put a whole new spin on the DIY world.
7) Is LEGO® safe in an aquarium for both the fish inhabitants and LEGO®?
After consultation with The Lego Company, it is indeed safe for all concerned. LEGO® is comprised of a very stable inert hard plastic and will therefore not breakdown in an aquarium environment.
http://www.vlc.ca/faq.php
This could put a whole new spin on the DIY world.