Micro Algea

[Peter Pan]

I'm relatively new to salt tanks, today I was at the local Store and saw a
guy buying Micro algae. to me it looked like a broccoli stalk. When I asked
him what was he explained that it helps control algae, that they fight for
nutrients, thus kills off the algae.

My question is this: I have 75 gal with 50 lbs of Live Rock on a bed of
sand. The tank is over a year old and doing fine. I have a small amount of
aglae nothing too crazy. Should I purchase some micro algae things and
introduce them into the tank. Also if I should get them, what is the
maitenacne of them i.e. do they eat anything besides Algae?

--

[Pszemol]

You are probably talking about macro algae, not micro algae.
And macro algae do not eat algae -> they are a kind of plants:
they use light and minerals from water to grow... This way
they compete with other kinds of algae for food in your reef
tank - other kinds of algae, like "hair algae", may be not
as pretty and because of that they are unwanted in a reef tank.
Look up names of macroalgae like "caulerpa" or use keywords
like "algae filter", also "tang heaven" or "refugium" in your
favorite websearch engine (www.google.com, www.yahoo.com etc.)