Hi! I'm a first time user so bear with me. I have a 90 gall. tank with ich. Just got a few days ago. Treating it with Copper Safe. I changed about 30 gallons yesterday and added the proper dosage of copper to the water I took out. I left in my filter because it says don't have to remove if not new. The severum I have looks like it has more white spots than ever. All of the fish have it now, some more than others. How long will this take to get rid of the white spots. Does it get worse before it gets better? Copper Safe says it is in the tank for one month. So you just leave alone and do nothing but water changes? Should I be seeing improvement soon? How long? Should I try something else? I did put salt in the water the first day of treatment also. How do I know if the treatment is working. What should I look for. Any help would be appreciated. I have 3 Severums, plegostomus, spotted pims, pacu, a shark, one angel fish, tetras, danios, silver dollars (which have it noticeably), gourami, a bicher (snakelike fish), and Tilopia's. Thanks!!!