As for the coral decorations, thank you for the compliment! The majority of them are from O.S.I. marine labs (I don't think they are manufacturing anymore, so they were tough to track down. The big one in the center, I found at my LFS. It's been there for at least 5 years, and no longer had the brand name attached. Tough to see in the pictures, but the smaller ones (tube sponges, small brains, etc... I made myself from polymer clay. Have been considering placing a small order with Living Color or Ocean Aquaria for a few small pieces to see how they work out/look, and then do a bigger order if all goes well.
I've actually been looking into chillers recently as well. A friend of mine (the same that looked after my sharks while I was on vacation), may have to relocate for work, and if that turns out to be the case would need to re-home his pair of Heterodontus francisci. From my understanding, they can live at higher temps, but seem to do best in the mid-high 60's. I will probably set them up on their own in a pool somewhere around 500 gallons (to start with). Pearls of Paradise and Dreampond are a couple holding tank manufacturers that I've been looking into. What brand/size chiller would you recommend for something of this size? Not a sure thing yet, just something I'd like to be prepared for. And ugh... I went through that exact same thing when our energy company switched from estimated to actual usage! That first bill on the new system... ouch!
On another note, the sharks have taken to eating the powdered food! Am really glad to have stuck with it, and thanks again for the recommendations on how to prepare it. I think that really made the difference.