[Dudester]

EBOLII - We're lucky in Austin in that our power outages are relatively infrequent, and in the 6 years I've lived here we've never been without power for more than 30 minutes. My emergency backup power will therefore consist of an APC unit into which I'll plug my sump return pump. This will provide the necessary circulation and oxygenation to hopefully prevent things from getting too far out of whack.

jnarowe - I know what you mean about planning for much more, but the reality in this case is that I'll be moving to a new house in about 18 months, and I don't plan to expand too much on this current system while I'm in this home. The new house will be built with a pimped-out tank room and plenty of opportunities for expansion.

bcoons - Thanks for your advice, and good to talk with you on the phone. I'll heed your recommendations and see if I can upgrade to a 20 amp breaker.