15 Gallon Tank/Bettas

[Starka]

I just bought three cute little betta's. Two females and one male. Currently I have one little female roaming a 15 gal all by her lonesome, though she is quite happy swimming around such a large tank compaired to her little bowl.
The other female is in a large bowl floating in my 26gal. I was hoping that they would be tolerate each other in the 15 gal, but the little female in there was too aggressive and pulled other female out.
I was hoping to get a divider for the tank but my pet stores have ones that are for 30-50gal and wouldn't fit my tank. I was wondering if anyone had any ideas for what I could use as a divider for a 15gal tank?
I am setting up a gallon bowl for my work and I could use that, but wanted to know if you had any ideas.
I also had a question about betta's. When I went to pick a betta from the store, I noticed that most of the males had white on the ends of their bottom fins. Is that fin rot?

Thanks!

 

[RedFlame]

You could buy some acrylic sheeting or plexi glass or maybe even glass and cut it (or have it cut to spec) to size to fit your tank.

 

[Mumma.of.two]

This is what I'm thinking of doing in an 8g I have.
http://usafishbox.forumotion.com/t3105-simple-canvas-betta-tank-divider
The white tip on the bottom fins is just their coloring

 

[Starka]

Oh my gosh, that is such a great idea! I make coasters out of those for Christmas so I have a bunch at home, perfect!
I am glad that it is just the coloring on the fins, I was starting to think that nearly every betta at the store had fin rot.
Thanks

 

[Starka]

Ok, I put up my homemade divider and it works great! I haven't gotten rocks for this tank yet so it keeps falling down, but otherwise it works great.

Thanks for the great idea!

 

[Mumma.of.two]

Ok, I put up my homemade divider and it works great! I haven't gotten rocks for this tank yet so it keeps falling down, but otherwise it works great.

Thanks for the great idea!

Pic?!

 

[Starka]

I'll get one up as soon as I get home
Though its kinda ugly with mismatched things from other tanks and a handfull of rocks.

 

[Starka]

Well, here it is. My poor little 15gal tank with two cute bettas. The blue/black betta is the sweet one(left) and the blue/red(right) one is the trouble maker. Its funny she flares up everytime I come up to the tank or when the room lights go off.
The breeder net and the bowl in there is to keep the divider up until I can get more rocks. Its been working perfectly. Thanks so much for the idea!

 

[Mumma.of.two]

Your welcome. It looks like it works well! I've been meaning to do it myself for ages but haven't got around to it yet