The hardest part of cycling is finding the patience to wait for the nitrifying bacteria, which occur naturally in the environment, to fall into your tank and grow. Hence the popularity of Safestart and other bottled bacteria.
Many experienced keepers successfully use bacteria supplements, some in preference to live bacteria from a suspect tank.
Prime does not, in any way, interfere with the cycle. It reduces ammonia to ammonium; either is converted to nitrite by the bacteria.
One Betta in a 10g doesn't create much ammonia to feed bacteria. As you change water regularly, I have to presume that you have nearly 1.0ppm ammonia in your source-water. Check it and see. Keep using Prime every couple of days to keep the ammonia reduced to ammonium.
Growing a crop of nitrifying bacteria in filter medie placed in a bucket or spare tank is the fastest, safest way to get a cycle going. TSS, Dr Tim's One-and-Only, ATM Colony or any supplement using live bacteria (check the sell-by date for freshness) can be used without worry in a fishless environment.
--high filter flow
For fish-in: just keep changing water. Keep the ammonia and nitrite >0.25ppm.
Live plants (fast-growing root-feeders and floaters) will help guard against ammonia spikes and rapid water-quality changes. See the plant section for details.
Read the cycling stickies in the "bowls and habitats" section.
Last edited by Hallyx; 05-18-2013 at 04:09 AM.