Nah, don't worry about it, you're alright Homer :beer:
But yeh, obviously a smaller tank would require more maintenance than a regular 20g (weekly 100% WCs) but it does have its perks compared to larger systems, such as being cheaper to setup and maintain (pretty much the only reason my cheap @$$ I can think of), also simpler and with fewer equipment.
I tried a pico and it didn't go great for the coral, but only coz my light was inadequate and my air pump died.
Couldn't I just use a heat source with a higher wattage to keep the temperature stable? Or is that not how temperature works?
20 years ago, such small systems were universally thought to be impossible, but nowadays, as a quick google search will show, vase reefs are possible and not as difficult as once thought.
While it is certainly possible to fail, I, being as stubborn as I am (sorry Homer), won't be swayed until I fail. Of course I'll do my best to make this experiment succeed. And if it doesn't, well hey at least I'll know for sure.
I'll look into those heat sources, cheers mcgyvr.