I know Terracotta pots have been a long time staple of fishkeeping and considered (usually to be safe).
What do you know about making your own clay caves/sculptures etc...?
They have oven-bake clay- where you can fire in your own oven at 350F for an hour to harden (not as durable as normal terracotta- but what wear and tear will it get inside an aquarium?)
Is that a safe clay to use?
There is also regular terracotta clay- we have an art store down the road that fires artwork by kids and whatnot in a kiln - I might be able to get them to let me use their kiln (I'm sure for a fee).
For wedding cakes- you can find at art stores moulds for pillars- can make some impressive "parthenonic" caves using them and some clay.
What do you know about making your own clay caves/sculptures etc...?
They have oven-bake clay- where you can fire in your own oven at 350F for an hour to harden (not as durable as normal terracotta- but what wear and tear will it get inside an aquarium?)
Is that a safe clay to use?
There is also regular terracotta clay- we have an art store down the road that fires artwork by kids and whatnot in a kiln - I might be able to get them to let me use their kiln (I'm sure for a fee).
For wedding cakes- you can find at art stores moulds for pillars- can make some impressive "parthenonic" caves using them and some clay.