How to achieve max mix of clean and dirty water within the display tank?

[taneal1]

By observing the flow of flake food on the surface of the water..

Thanks Dave,

Can't get any simpler than that!

Tom

[taneal1]

These are good things to think about but at the same time it might not be as critical as you think. Water mixes and 'dirtiness' diffuses. You are turning over the water volume anywhere between 3 to 10 times an hour. If you have ever dosed with a color medical treatment you'll see that the dye is evenly distributed after ~5-10 minutes.

Thanks James,

Last night I found an evaluation of flow and the mixing of water. Any mixing issues are basically overpowered by the high volume of tank exchange rate, which is something I had not considered. I'm still going to attempt to influence the mixing of the water by controlling the flow, but I no longer believe this is a critical issue.

The above and your response have convinced me.

Tom