I am so tired of waiting for my tank to cycle that I decided to go ahead with the Tetra Safe Start. I haven't changed the water in my tank for two weeks and the amonia level today was at 0.50. I thought the amonia level was supposed to go down durring a fishless cycle, not rise. How bizarre. My question is do I need to change the water before adding the safe start? Is it safe to use Prime or will that kill off the TSS bacteria? Oh and how long will it take before I can add fish. Is it instant?