Ten Gallon Betta Tank Questions

So I had a ten gallon community tank with 2 albino Cory catfish, 2 ghost shrimp, and a gold giant mystery snail. All was well. Today I went to Petco (this was a good Petco with well-informed employees and healthy animals) and set a bunch of male betta cups together to choose the most mellow. The winner was a Very young dragonscale pink red and white boy. I added a small dose of dissolved aquarium salt. After acclimating him (didn’t quarantine him because he acted and looked healthy) I added him to the tank. I have a Top Fin 10 Filter and the flow was very strong for him. I turned it off. He was about two thirds the size of one of my albinos. He quickly swam and hid. Even the ghost shrimp were large compared to him. He was breathing hard after fighting the flow of the Filter. Those albinos would scurry around the tank and accidentally ram into him, terrifying him an sending him hiding under all the plants

Questions:
How do I lower the tank flow?
Will the albinos bother him?

If it doesn’t work out I have an empty 2.5 gallon and decor and filter and heater but it would need to cycle a couple of weeks.

Water conditioner: Seachem Prime
Temp: 77
Decor: fake coral hide, five silk plants, three huge rocks, gravel, betta log
Food: bottom feeder cucumber wafers by PlecoWafers and Omega One marine minI sinking pellets with garlic
Water parameters: good
Age of tank: 2 weeks +
Health of current fish: perfect and active

 

Take a 20 oz plastic soda bottle and cut off the top of the bottom, so that you are just left with a cylinder. Cut that open, so that you are left with a curled plastic strip.

Tape one end of the plastic strip to the top of your filter, and arrange the curled plastic bit so that the water is landing on it. It will diffuse the water flow, and reduce the output strength.

You can also use increased plants and Decor to give the betta some places with reduced water flow in which to hide.

 

Well corys do better in a school and that can help reduce aggression. I had a problem with my 5 gal betta tank where the filter was too strong to I just used some filter floss I had leftover.

 

Thank y’all for your responses. This morning he was dining much better and he was actually swimming along with the albinos. They were getting along very well. I will take your tips on the filter. One thing. Is the glue to strong because it takes in the water or because it comes out?

 

I've got some questions. What are the exact parameters?

 

Zero ammonia
Zero nitrites
17 nitrates

Or the other way around with the nitrites and nitrates... I always get them mixed up

 

You should test them again, Nitrites are way more serious than nitrates, very small amounts of Nitrates are not as bad as nitrites

 

Questions:
How do I lower the tank flow?
Will the albinos bother him?

put a sponge to the filter with a rubber band. The suction will slow down too which is also good