I am going to start a female betta (with 10 females) sorority tank in a 29 gallon acrylic aquarium that I have. With the tank I have an Aquaclear 50 power filter and I will have a Fluval Prefilter attached to it. I will have a heater, gravel, lots of hiding places, and possibly live plants in the aquarium as well (I have heard that it is beneficial for the fish). However, I have a few questions:
1) I will be buying from a local Petsmart store, and since I do not want to force myself to buy 10 from the start as they may not all be my preferred color or healthiness, how many should I start out with? Additionally, since I will add on others later, how many should I add at a time? (I have also heard that you must switch up the surroundings so they can re-establish pecking order)
2) Should I have a 10 gallon quarantine tank for any new fish/ fish that get sick that is filtered and heated?
3) What live plants should I add if I do, and is it necessary for bettas?