Yes because with more than one fish they use up a lot of oxygen, especially in a fish bowl, in which there is not enough oxygen for one fish, because the top is more narrow than the bottom. Air pumps are cheap and a filter oxygenates the water too!
Betta fish do not need to be in oxygenated water because they gulp air from the surface of the water. They can be kept in a variety of small containers. I found some really stylish ones online at www.bigalsonline.com. I attached a link for you!
No they breathe from the top of the water like a porpoise
A betta, is fish that lives alone in the wild, and likes it that way, your betta is doing what comes naturally to it, if you want to enjoy your betta get a clear bowl or vase, any size will do, put some gravel in it with some live plants an your betta will be very happy, bettas breathe air like we do, so you don't need an air pump,and you only have to change the water when you do not like looking at the alage or dirt on the stones or glass, the betta does not care how dirty or how much alage is on the glass.
2 times a week
Yes, but if he is nesting, it needs to be turned very low so as to avoid damaging his bubble nest.
Bettas do not necessarily need an air pump, as they have a labyrinth organ that allows them to breathe air at the water's surface. However, an air pump can help increase oxygen levels in the water and provide additional surface agitation, which can benefit the overall health of the betta and other aquarium inhabitants.
You will need a 24"x12"x12" tank with a heater/thermostat set at 80F, a thermometer, an air driven box/corner filter and an air pump to drive it. A glass cover for the tank (helps protect the nest) and a light over the tank. Floating plants are usefull for the male to use in his bubble nest construction. A few rocks making hidey holes and other rooted water plants in clumps are also usefull for the female to hide in when she needs to. Then I guess you will need a male and female Betta splendens both in breeding condition. I usually add the female to the males tank rather than vice-versa.
air pump on a car whats the purpose and do i need it to drive
There is no need to bleed air from a fuel pump.
No, Bettas actually have something called a labrinthiform organ behind their gills. This allows them to store some oxygen, and they tend to gulp air from the surface. If you are going to have a lid on the Betta's home, be sure to leave a small air gap between the waterline and the lid for them to gulp from.
nO THeY DonT NeeD aIr pUmPS
No you do not.