Seahorse in a Nano - Only fish...

[Moogled]

Originally Posted by andsoitgoes

Dwarf seahorses are well know to be successfully kept in very, very small nano tanks, and are not as hard on the system as larger sized.

I was wanting to know of an in-between option if there was one. I know standard sehorses wouldn't, if there are no dwarf-like alternatives, or something that would work in a smaller tank, then that answers my question. But as there are dwarfs that would thrive, it's why I was interested in more info on what could potentially be available.

How small can it be while still being sufficient?

It goes without saying that smaller pygmy seahorses would contribute less waste to a tank but I just don't think that your described setup of only 7 gallons would be optimum. However, a nano tank of 10-20 gallons seems more plausible to me, even if it's just a bit more room.

I'm confused about what you're saying because it doesn't seem like you're quite sure if the setup is going to work or not.