aznxcheapbasta3,
Hello there,
First, you plan to put seahorses into a fairly new tank... someone correct me if I am wrong, but that's a recipe for disaster....
I thought corals where hard to keep, but Seahorse took the cake. My understanding about seahorses is that they DEFINITELY need Pristine water conditions, live food enriched for a higher protein intake, and a fairly new tank, will not have this. Again, someone correct me if I'm wrong...!
Secondly, if you have a biowheel, is this an eclipse tank...? If it is, let me know, because I had the same thing happen and figured out that the blue sponge on the top hood, that also holds carbon on the bottom side, had gotten a bit clogged, this will make the water take a different flow rate, thus making the biowheel not turn. Sorry for the convoluted explanation of the second point....
ps. If you do introduce the seahorses, let us know how you do...!
Good Luck...!