Originally Posted by lex412
Thanks for the responses. I only plan on having the one fish, so I don't need to get a huge tank. 2.5 sounds good..any recs for heaters? And should I get a filter, or just do the water changes?
2.5 is way too small for a Betta, but do what you want to do, even for one Betta fish. Myself I would never stick my Betta in something that small, but that is me. Too many fish experts told me things, so I know better now. But do what you want, just making suggestions.
You need a filter for better water quality, yes. And to help cycle the tank and to keep you water quality good. Without filter your water quality will be poor, and make sure the filter is not too strong for your Betta. I use Whisper filter myself.
And yes, you do water changes, always and you always add prime, or Agua safe before you add new water, and since you want something so small you will be doing a lot of water changes. And it's going to be hard to keep the temps stable with a small little bowl like that, even a 5 gallon tank is considered a bowl.
I have a 5 gallon tank and I am always doing water changes. I like my 10 gallon tank way better. I do not have to do water changes, but every few days, that is because the tank is cycling.
On A 5 gallon, if the tank is not cycled, then I do 20 percent water changes daily. Once the tanks cycle I can do 10 percent water changes 2 times a week on the 10 gallon, were is on the 5 gallon I will be doing 20 percent water changes every couple of days forever. I was told to do more water changes, but I don't and my fish are fine.
You are getting something a lot smaller, that means more water changes than a 5 gallon. All the time.