Just from my own experience, my 10 gallon tank was a breeze! A year later, it's still had not a single problem and flourishes with small sponges. I do water changes about once every 2 weeks or once a month depending on the evaporation/water level. I used to test weekly but that ended 4 months into the tank when it was obvious how stable the tank is - now I test probably once a month...
The key to a VERY stable small tank (IMHO
), is to really load it up with live rock and control the light as much as possible. I bought as many small rock frags
as I could and just kept adding till I got to a level I was happy with. I only keep one fish in it (to keep the biocycle going) and use it primarily as a hospital tank when/if it's needed.
, I also have a 29 gallon tank that has been nothing but problematic.
I say: Go for it! In the end, the 10 gallon will teach you a LOT and if it does crash, it's a whole lot easier to take then a 30/50/100 gallon tank loss.