Zoo's Closing up

[andresont]

or perhaps some chemical filtration ? Carbon etc.?

Originally Posted by Diana

Could be chemical warfare between the two groups of zoos... maybe try moving them to another location.....

[Coderad]

All levels are still good. Put new carbon in friday. I moved the zoo to a new spot and I see if there is any change.

[Moogled]

I had the same problem before.

They actually ended up closing and puffing up with water inside them. Never opened up and coraline/algae ended up covering it up.

They looked like they were dead so I threw them out.