I'm going to be setting up a new tank and, while cycling, I want to narrow the flow down. I'm trying to think of something that will help me really see what the flow is doing. (More than just feeding the tank and watching it.) Its mainly because I keep a mixed reef so keeping flow heavy on one side and low on the other, while certainly doable, would be much easier with visualization.
Something like ribbon tied to rocks? Assuming ribbon is reef safe? (I have no idea what the stuff is made of)
Any other idea I could try?
Something like ribbon tied to rocks? Assuming ribbon is reef safe? (I have no idea what the stuff is made of)
Any other idea I could try?

