Here is a simple, easy approach that works for us at Aquariums West. All you need to do is

1. Change 1/3 of the water twice a week. You can either use a little siphon to take the water out of your bowl or pour it out carefully. I like to keep a house plant next to the bowl so I can use the old Betta water to water my plant. It is full of nutrients that your house plant will love. A water change is like opening a window and letting in some fresh air for your fish.
2. Use water that is slightly warmer than the water that your betta is in so he doesn't get a chill,
3. Add your water conditioner, (we recommend Sea Chem Betta Basics Conditioner because it not only renders the chlorine harmless, it also sets the ph to 7.0) and
4. Slowly poor the water back in to your bowl.

Any time your Betta seems to be lacking in colours or energy just do a 1/3 water change and it will perk him up. Feed him Hikari Bio Gold Betta food, about 5-8 tiny pellets a day. If he goes off of his food switch it to Sera Blood Worms or Hagen Blood Worms and if you really want to treat him get him some Hikari frozen Blood Worms. Every so often, maybe 4-6 weeks, clean out the entire bowl. Pour the Siamese Fighting Fish into another cup or bowl that is free of soap, Italian Dressing, peanut butter, coffee, or anything else that may have been in there, and rinse out the bowl and gravel with hot water. Never use any soaps or detergents. If you have a plant in your bowl, just remove it and place a wet paper towel over it while you clean your bowl. Fill your bowl with water that is slightly warmer than the water he is in, measure out the appropriate amount of Betta water conditioner, plant and decorate, and then pour him back in the bowl. If you go away for a weekend, don't worry about feeding him, he will be fine. If you go away for longer than a weekend we sell 7 day feeders especially for your Betta.