Sounds like a few too many chemical additives. The usual result of an LFS trying to make a quick buck. The only chemical you should be adding to your tank is a dechlorinator, and ammonia if you are choosing to go the Fishless Cycle
route. Since it sounds like you are relying on cycling products to cycle your tank, you should know that any bacteria added from these products will quickly die off without a proper food source ie fish waste or other ammonia source. It is my humble opinion that nearly all cycling products are a waste of money. Best bet for future reference, learn about the Cycle
, and use filter squeezings from an established tank in place of cycling chemicals/additives.
Your nitrites will remain at 0ppm until the Nitrosomonas bacteria are able to survive and colonize within the tank. Without a source of food (ammonia) for these bacteria, they will not develop.