I was a little scared to dump an algae eater into the tank because we have an extremely aggressive betta. I have never seen a betta this aggressive nor as lively before. I know they typically leave bottom-dwellers alone but I just don't want to have to explain what happened to the algae eater when he's harrassed to death to the more.. innocent in my household :X
We contemplated live plants, as this helps to deter algae growth but then this produces all sorts of other problems - such as having multi-spectrum light for the aquarium.
Light was the primary problem that caused the crazy algae growth in the first place, so we're more strict as to when we use the light - a set 8 hour period to simulate day. Also, I upgraded the betta to a 10-gallon aquarium. Larger aquariums are paradoxically easier to clean and are safer (so I've found) as they regulate themselves better. I also change out a gallon of water once a week.
So far, no huge algae build ups!
Being sad is the same as giving up.