[365seasons]

We are thinking that we can eventually custom build another column tank like our existing one, but a mini one (29 gallons maybe) for the seahorses.
So they won't be cooped up in a 10G forever. Thanks for the advice though

and thanks Myka too! We'll have to take the biowheels out of the filter then, because we are getting hair algae, and I guess the nitrates from those may be part of the culprit! As well, we bought that urchin when our tank was first cycled, as one of the employees at a LFS "assured" us it would be an ideal tank mate, and fine in our tank. He is already humongous and needing a new home pretty soon.

Thanks again for the comments! =) We like it a lot.