Today all the spots are gone, it's also 48 hours from the time I added the first dose. I'm about to do a vacuum/water change and add another dose. With no visible symptoms, can I lower the water temperature while continuing med treatment? These are goldfish and dojo loaches, and they don't like warm water, so I hate to stress them unless I have to. I bought a new gravel vac just for them, but before I saw the ich I was using the same equipment between the goldfish tank and my 55 gallon angelfish tank. I've been watching like a hawk, (so far no signs of it there) and have since stopped sharing equipment. Everything I thought might be contaminated I have sitting outside to bake in the Florida June sun lol, but I'm not sure how long until I can consider it free of ich.