if you have brown algae, you should pick up some otocinclus cats, they are great at removing the brown algae and they are nice and cheap. sometimes i have algae outbreaks and i just buy a few, toss em in, and let them do their thing, after a day or so you won't believe how much they've taken care of. i just make sure that i feed my piranhas first and then put the otos in on the opposite side, they do a pretty good job of staying hidden while attached to your plants eating algae. excel is a great algae preventative tho, i love the stuff.
for hair algae, your best bet is to just scrape it off, if you can take the wood out, scrub the hell out of it to make sure you get it all off and then stick it back in there, otherwise you can just scrape it off while it's in the tank.