My fish have ich (, I know), so I have been doing a 30-50% water change for the past 2 days. After I turn on my filter after changing the water, all these white flakes that coated the inner tubing to the return pipe litter my tank. I just now thought to take a picture, but it's too late. I have been using my fish net and spending about 10min skimming the algea, but it takes forever. Also, I noticed this forming a while ago, but I figured it was part of the "oily film" that is natural in the tanks first few months. Any ideas on how to prevent it, slow it down, or (more preferably) eliminate it all together?