I agree with DarkMoon, epsom salt is waaay more effective than peas. Peas are only a last resort, sorry I should have mentioned that. If you can find it, frozen daphnia is much better. Daphnia is known for its "cleansing" properties in fish.
If you'd like, you should switch to pellets, they're much easier to feed and won't cloud the water. Good brands are Omega One Betta Buffet pellets, New Life Spectrum Betta Formula pellets, and Top-Fin Color-Enhancing Betta Bits at Petsmart.
Betta07, I sent you a PM so when you reply back with the needed info, I can help you.