Hey! I got my new betta Felix on Friday after Max has passed away..

Anyway, I was wanting to ask if you see any problem, so I can help him. Right now he's in a 5 gallon tank with a heater on 26 Celsius, I'm feeding him flakes and he gladly eats them. He's swimming a lot, I don't know if it's good or bad. He's slightly bloated, because I haven't found the right amount yet. I decided to do 50% water changes on Wednesdays and 100% on Saturdays.
http://www.youtube.com/watch?v=m6FW3...ature=youtu.be
What do you think?