jetajockey
come get me tang police!
Also, it's up to you what you choose to do, but with the fish in cycling, doing PWC every other day will endanger the health of your fish. It may not kill them, but the ammonia will burn the delicate tissue in their gills. Making breathing difficult for the rest of their lives. It will also compromise their immune system, leaving them susceptible to disease and an early death.
No it won't. That's the whole point of using Prime, it detoxifies ammonia/nitrite up to 48 hours. Also, assuming the seachem techs are wrong about their own product, that level of ammonia/nitrite exposure has not been conclusively shown to have any long term side effects. Also, ammonia toxicity is completely pH relevant, but that's another subject in and of itself.
After getting toxin levels down, doing big water changes daily or multiple times a day is detrimental to the growth of the bacteria colony and unnecessary if the precautions like proper testing and water conditioning are done.
If you don't believe me, go to their forum and ask them yourself.