danimal;2549062; said:once a week... i don't have a camera that would give a good enough picture to diagnose anything... they are very, very small. barely visible to the naked eye.
Changing the water and vacuuming through the gravel are totally different.
I used to just siphon water out but if you don't thoroughly clean the gravel, you are just wasting water.
I'm not accusing you of not cleaning good enough, simply stating a possibility.