I'm currently acclimating some Mollies and guppies to saltwater to see if they will help graze hair algae off my macro algae. There is plenty of info out there on the acclimation process, but I have a question regarding nitrifying bacteria in saltwater vs freshwater. I'm at day 10 and an SG of 1.015. So far the fish are still good but ammonia is creeping up a little. I added a cycled sponge filter out of a saltwater tank but it didn’t do anything. Ammonia is at 0.5. Is it pointless to trying to establish nitrifying bacteria in a tank when raising salinity? Is the nitrifying bacteria in fresh water and saltwater not interchangeable?