Get a GFCI. Really the only way to protect yourself and OTHERS, who may not be aware of the potential dangers. I ran a long time without. If I'm dumb enough, I guess it's one thing but, if one of my kiddos got zapped! You can get one that plugs into standard outlet. I bought a power strip with 6 individual switched outlets. Bought three GFCI plug in outlets. That way I could isolate things so if a power head tripped one, the other devices would continue to run. Also, they have them so they will automatically reset in case of power failure. I think I had just over 50 bucks in it. Small price for a little piece of mind.