I was told not to vacuum my gravel because that's where some of the bacteria grows. Now, I know that there's fish poop down there that needs to be cleaned up. I had difficulty cycling my tank because I was "too clean". It's cycled now though!! I have a gravel vac that works very good getting the "crud" out, but what's the proper way to do this so I don't kill the beneficial bacteria. Another question, what about rinsing filter's once a week. one LFS said to rinse the filter once a week and the other told me not to touch it until I do my water change. Please help!