Coral Only Nanos/Micros?

[ChoralCoral]

Any one out there have a coral only nano/micro? I'm curious about how the set up may be different than a regular fish/coral tank? Since the bio load would be so much smaller, would you still need the usual SW set up with skimmer/filter/sump etc?

I'm totally new to SW tanks- doing lots of research before I jump into anything. If you have a coral only tank, I'd love to hear about it....pics, equipment, species, feeding, etc....

If I were to pursue this idea, I'd be thinking about a really small tank 5-10g.

Ideas?

[FishNutty]

I had my 7.5 gallon cube set up without any fish for over six months and it did really well. I did get a little bored, but I think if I'd been willing to invest more in inverts(some sexy shrimp, crabs, ect), I would have liked it a bit better in the long-term.

Livestock was:
Three different kinds of frogspawn(One isn't pictured)
Two different kinds of torch
Branching hammer
Duncan
Three maxi mini anemones
Four rock flower anemones

There was also a coral banded shrimp and some hermits + nass. snails.

Hardware was:
Current USA TrueLumen LED strips (1 x 12,000K White/453nm Actinic Blue; 1 x 453nm Actinic Blue.)
Hagan Marina S20 Slim filter (Skinny version of of ever-popular Aquaclear. This was all I use(d) for flow/water cleaning-bag of carbon and filled up the back with pads to snag the debris.)
100 Watt Marineland Stealth Pro Heater

http://i770.photobucket.com/albums/xx341/AnnasHope04/21F9C770-9436-46EB-A7CE-1D5B2F865617-23713-000005C88C483BC7.jpg (http://s770.photobucket.com/user/AnnasHope04/media/21F9C770-9436-46EB-A7CE-1D5B2F865617-23713-000005C88C483BC7.jpg.html)

It did really well, I just missed the fish. The tank is still up, but there's a black clown in it now. I have a build thread on another forum if you want to see more; if you google 'Serenity Cubed' it's the about the second one down.

Now, I added the fish, but I didn't change any of the hardware(although I'm needing to alter the lights for an anemone I put in.) I've never run a skimmer, refugium or sump. And honestly, half the time I have my 'filters' running with nothing in them. I change 15-25% of the water monthly to bi-monthly, and feed the LPS and nems mysis once a week-ish. The low-tech apporach is not only easier on your wallet, there's less to mess up(if you're not dosing it, you can't OVER dose it!), and at least in my case, I've had really good luck.

This is a current shot(several of the LPS look to be the same size only because I've fraged them in half after they doubled in size since the photo above was taken in January)
http://i770.photobucket.com/albums/xx341/AnnasHope04/49C40847-5F62-4F3E-A33D-F8021B3181ED-16066-00001E7817D9FE16_zps2ea05411.jpg (http://s770.photobucket.com/user/AnnasHope04/media/49C40847-5F62-4F3E-A33D-F8021B3181ED-16066-00001E7817D9FE16_zps2ea05411.jpg.html)

[ChoralCoral]

That tank looks fabulous! So, just a filter, heater and some LEDs.....that sounds doable. :)