Water Quality

Clean water, clean water & more clean water, this is a vital factor for a healthy betta. You should change your bettas water at least twice a week to insure that he/she has clean water. Make sure that you remove any uneaten food and waste from the bottom of his bowl (a turkey baster works well for this).   Leftover food can quickly lead to bacteria growth which can lead to disease and/or fin rot which can lead to a sick and/or dead betta.  Take care when removing the leftover food and waste that you don't tear your bettas fins or injure him/her in the process.  Most bettas stay clear while you perform this task, but some are curious and can get in the way.  Bettas like a ph of around 6.7 - 7.0 and a temperature of 76-80 degrees Fahrenheit.  If you use a filter in your betta's tank then be sure to set the flow to the minimum setting allowed as bettas don't particularly like strong currents.

Feeding

Try to get into a daily routine for feeding your betta(s). Feeding once in the morning and once in the evening is a good routine to follow. Try and feed your betta a varied diet which can consist of live, frozen or freeze dried food. I feed my bettas Hikari frozen bloodworms, Hikari frozen Brine Shrimp, Frozen Daphnia, Frozen Tubifex Worms (for the growing fry) and Ken's Premium Betta Micro Crumble.  I also use a variety of Ken's Flake foods in a combination to supplement the growing fry (Egg Flake, Vitamin Booster, Plankton/Krill/Spirulina Flake).  Of course many other breeders use  "live" foods such as blackworms.

 Some people "fast" their bettas once a week to cleanse their system.   I give my bettas peas once a week for a one time feeding instead (yes bettas like peas).  It acts as a laxative and cleans them out and I don't feel guilty about not feeding them.

Housing