A surge protector is not a GFI anyhow, Andrew. A surge protector is designed to protect your delicate computer electronics in the case of an extremely unlikely surge in power, such as if your house or electrical lines are hit by lightning. Other than that, they don't do anything (and, many "surge protectors" still do nothing but look pretty with a glowing orange light...

). Most modern fuse-boxes (circuit breakers) will do the same thing anyhow.
If you don't believe me, plug an air pump into your power strip, and toss it into the tank. It won't blow the power strip. (
DO NOT REALLY DO THIS! I'm kidding). Seriously, how many of us have had a short from a bad heater, wet light, or whatever, and everything is plugged into a tap strip / power strip / "surge protector?" This is what a GFI is designed to protect against; it can't happen with a GFI.
I highly recommend that any outlet around the aquarium have a GFI installed. You can buy them and install them yourself for about $25, and it really isn't difficult (just follow the instructions, shut off the power first, etc). You can also buy plug in ones for a little bit more.
Frankly, I think pretty much every outlet in the house should have a GFI on it.
Now, if you'll excuse me, I'll be back in my "do as I say, not as I do" corner.