Okay, here's the problem: I have talked to many people, especially on here, and they've told me the solution to keeping my tank and fish clean and healthy is to do a 20% water change every other week or 10% weekly. This is NOT working. I'm not blaming anyone, especially on here. I've lost 5 of 7 fish. I have a 5 gallon tank with a filter that works well. I've heard that it is a lot tougher to keep a 5 gallon tank clean than a 10 gallon. I used to have fish when I was little, and my dad has had them too, and he would clean the tank probably once a month or when it was dirty and do the whole water change at once. He never lost any fish, he would change the water and leave it out for a few hours to let it adjust to room temperature with the filter running. I am probably going to do this, what does everyone think?