From before I was thinking of getting a 20-gallon tank. The filter, heater, and everything was my personal choice. The stocking was 1 betta, 7 Cherry Barbs (Male), and 6 albino corydoras. Then I am now considering a 29-gallon tank. My budget is $230. Everything was expensive so I decided to get the Aqueon 29 gallon kit. It is only 140$. I will be getting an Aquaclear 30, and the Ehiem heater. The total is $180. Should I upgrade or not? And If i do upgrade what fish should I add? Thank you in advance.