Hi, when testing my water today everything is fine excpet the Nitrates. I use the Aquarium Pharmecueticals, INC Saltwater Master Liquid Test Kit and for Nitrates there scale goes from 0 ppm to 160 ppm. Currently my water is showing up as being between 80 and 160. Ive read about Nitrates and how to deal with high levels from different sources and some contradict each other. I think the problem may be from left over food or algea. What do you suggest I do to bring the level down? Thanks 
