Male Betta And Algae

[jellybean7311]

I have a male betta in a 2.5 gal. tank with a good filter in my kitchen window sill. The algae in the tank is starting to get pretty bad. Instead of adding chemicals, I would rather get another fish or something that will eat the algae and leftover fish-food. My betta is very active. I want to get a small pleco or cory catfish, but I'm not sure if he will attack it. Anyone tried this combo? Please let me know. Indigo, my betta, needs a algae-free tank.

 

[snazy]

You can't put another fish in a 2.5 G tank. It's too small.
How do you feed your betta because mine doesn't drop one flake or wafer. I put them one by one so no left over food is possible.
You need to figure out what's causing the algae and fix that. Chemicals or adding new fish are the last resorts and for a 2.5 G tank is almost impossible.
How much light does the tank get? Is it close to a window? What is the exact type of algae as many are caused by ammonia present in the water and considering it's a 2.5 G tank you probably have no filter to cycle the tank, so more likely that's your cause but pictures of the algae will help too.

 

[ScholasticSpastic]

I'm going to second the no more fish vote. There simply isn't enough room in that tank for any more fish, and there certainly isn't room in that tank for any species of corydoras or plecostomus even without the beta in there. The smallest pleco species I know of needs at least 20 gallons of volume to live in. There are some corys which might squeeze into a 5 gallon volume, but these are schooling fish, so please don't do that.

 

[LeiLana80]

Being in the window sill, in sunlight, will cause algae to grow. And in a tank that small, you honestly can't add anything else! I had a 2.5 gal tank a few years back with one betta, a small decoration and a plant in it, and I felt like the poor guy had no where to swim! I wound up upgrading to a 5 gal . But that's totally beside the point...
Anyway, best suggestion is to clean the tank out, and watch feeding times so you give him exactly the right amount so none floats down and icks up the water. And every few weeks do a small partial water change (still good to do even with a filter).