Everyone saying "magfloat, algae scraper" or whatever, what about your decor? If the tank has a good bit of light, algae's not just going to grow on the glass. It'll grow on your driftwood, sometimes un-turned substrate, plastic, and under some conditions, live plants.
Bristlenose plecos, flying foxes, and flagtails are supposed to be the best. I like lethrinops for turning over the substrate.
Best i've had is otos, but their size prevents them from being kept with and decent sized fish.
