Hi! I have a 36 gallon bow front that we are converting to a saltwater aquarium. It has been cycling for about 5 weeks. Ammonia has spiked and is back down to 0....and has remained there for about a week. Currently, nitrites are 2 ppm and nitrates are 40 ppm. Is my tank finished or is there something else I need to be doing to prepare for adding fish to the tank? Thank you in advance. My brain can't seem to keep track of everything I am reading, so I figured I would just come right out and ask.