Doris,
Glad I could help inspire ya' a little bit.

The importance of 'pods to your main tank would hinge quite a bit on what you're keeping in your main tank. If you're planning on keeping any sort of Mandarin, than the pods would be extremely important. If not, than the 'pods are beneficial, but not necessarily mandatory to keep around.
I won't claim to be a seahorse expert, but I'd think that a seahorse in a 'fuge would eventually completely wipe out the pods, no matter how well you fed the horse... But, as I said, I'm not an expert in seahorses so I very well could be completely off base on that assessment...
Another concern I'd have about putting seahorses in a refuguim (And one of the main reasons I stopped doing it) is that you have to feed sea horses so frequently, you'd basically be polluting your tank quite a bit with all their feeding and excreting. Now, if your tank is big enough and well filtered enough, this isn't much of a concern, but just something else to think about...
My father in law would be easily bribed with a fish fry, however, the catch is, you'd prolly hafta fly him down from his home in West Virginia as well, which would make his custom cabinetry rather cost-prohibitive... And, he's already made his annual trek down to see his granddaughter this year... Sorry on that point!