[mandm2]

I have never tried cups in a aquarium, but the alternative styrofoam lasts forever! I would use it for my nocturnal catfish, he needed a place away from my guppies. Please advise!!! :fish:

MandM2

 

[mandm2]

It would not be broken of course, if that helps.

 

[trixella]

Putting a fish in a glass cup separating it from the filtration would cause it to die.

 

[Nubster]

As long as there is no residue it should be fine. Glass is inert. You can also use small terracotta flower pots. That way the "cave" isn't clear. A see through cave would kinda defeat the purpose. Some people also use coconut huts but I'd think those would break down over time. PVC pipe can also be use.

 

[mjbn]

As long as there is no residue it should be fine. Glass is inert. You can also use small terracotta flower pots. That way the "cave" isn't clear. A see through cave would kinda defeat the purpose. Some people also use coconut huts but I'd think those would break down over time. PVC pipe can also be use.

Yup, coconut huts do rot over time, but some fish love to pick at the little hairs and stuff on the outside of it while it's still fresh

 

[Nubster]

Yeah...probably good for hosting some critters the fish would nibble on too.

 

[GMYukonon24s]

Ya I've seen people have the flowering pots and some use the pvc pipes.

 

[thinBear]

should be fine, a bit more frequent water change I guess?

edit:
oh... and water temperature changes a lot quicker (to the room temperature)
make sure your room temperature is suitable (and stable) to your fish

 

[mandm2]

Thanks everyone for the help! I've never had a "shy" and nocturnal catfish!

 

[reignOfFred]

FYI Most types of catfish are much less shy if they are kept in groups.