Science Buddies: "Ask an Expert"

I need some ides on how to make a fish water filter. I have an idea of using a funnel with a mesh catcher inside of it to catch debris from the water. I also thought of putting a small hose on the funnel for the water to drain into. My only problem is how do l get the water into the funnel. Any ideas would be a great help. Thank you.

I think we need more elaboration on the filter type in order to assist you more...

Yes, what's the purpose of this filter? Have you researched fish-tank filters on the web to see what they do and don't remove from the water?