i dont think they are, i think they add some some anti-mildewing chemicals to the ruffneck cans. they are much thinner and they don't have the food safe markings on them.
__________________
Given sufficient thrust pigs will fly just fine.
90 Gallon LPS tank - Challice, Acans, Favia, Diplo and Zoos
125 Gallon SPS Coming Soon!
|