You only need one fish to cycle a tank which you have
You do not want to change your PH. Your Betta will adjust to it. Any change to the PH will add cost and headaches down the road.
Remember anything you read from a company that makes products to sale will try to sell you other products you don't need.
Did you test your tap water?
Does it contain Ammonia or Nitrites?
If it contains neither you only need a water conditioner like API Stress Coat.
If it contains Ammonia you need a water conditioner like Prime.
If it contains Nitrites you need to find a new water source.
Last edited by Phaydra; 01-04-2013 at 11:46 AM.