I wouldn't worry about the algaecide, it's better at preventing algae than killing it once it's there. Once you can circulate the water, scoop as much of the crud off the bottom as you can, then shock it and hold it at shock level until you can see the bottom. Then get the bottom cleaned up the rest of the way, and hold shock level with the pump on 24/7 until the water clears. Keep an eye on your pressure gauge, because it may have to be backwashed frequently. I would use bleach, and it's probably gonna take lots of it. Do you know what your CYA level was prior to the hurricane?

Janet