Without an ammonia source, the bottled bacteria product is useless. An ammonia source is necessary to feed your good bacteria. The bottled bacteria products also have a questionable reputation. Whether they actually work or not is a topic of debate. But without an ammonia source, theres nothing to feed them even if the product did work & they would consequently die. Please read the link I posted above & the sections on fishless & fish-in cycling so you can decide which method will work the best for you to cycle your tank.