my saltwater fish tank is being overrun by alge?

first of all you have to clean your aquarium by your own hands if algae is to much present after cleaning buy a protein skimmer filter or if you have this filter change its cartridge it will help not to grow algae in the tank
 
i suggest you get some sort of algae eater. snail would help but they might breed and you might get to many. if you cant get and algae eater of some sort you should clean the tank. for more info go to this site . http://www.bestfish.com/tips/010600.html
 
i suggest you get some sort of algae eater. snail would help but they might breed and you might get to many. if you cant get and algae eater of some sort you should clean the tank. for more info go to this site . http://www.bestfish.com/tips/010600.html
 
If your tank is over 55g or more get a yellow tang . Yellow tangs are the best agle eatings of tangs. Get afew guppys and snails. Depending on what u got in the tank get ghost shrimps. Ghost shrimps are good too. How ever i would not try treat your agle. As agle treatment can be deadly to fish. The agle its self its not harmfully to your fish it just look ugly. So i recommoned getting some of the fish that i just recommed. And increasing your amout of water you change.
And get another fitre
 
fill the tanks with distilled water it will cost more but tap water has algae spores or seeds or Wat ever and it will grow when the environment is right also try to get some snails ex... to eat it
 
Buyer beward--most of your answers suggested freshwater animals. Swimmer dude gave you the best advice, so I won't reiterate all of his points, but I'll append his list.

Different people have different experiences with Phosban; some find it useful, others don't. It won't be a guaranteed cure, but it also won't hurt to try.

However, a protein skimmer will help, as it removes some phosphates (and to the nay-sayers: yes it does. *Ionized* phosphate is polarized; I'm not calling a protein skimmer a fix, I'm calling it a useful aid). If you aren't running one, it would help to start.

I have to reinforce the over-feeding situation. It's easily the top cause of algae.

As for what will eat the algae, it really depends on the algae that's currently growing. No matter what, mandarins will not help at all; they are strictly carnivores.

The most common nuisance algae is (at least at first) hair algae, which will be eaten by the popular zebrasoma tangs, such as the yellow tang. Most small snails will feast as well (such as the popular astrea and turbo snails), some crabs (but beware...most crabs will eventually want meat), some shrimps, and some urchins. Lawnmower blennies are popular as well. What you should get is really going to depend on how big your tank is and what you eventually plan on keeping.

Finally, I'd like to point out that increased water movement will help algae from becoming established, but it won't cure the algae already there. Make sure anything you use to control the situation includes increased flow, and make sure that the flow is throughout the tank. Deadspots are sure to harbor algae again sooner or later.
 
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