Nothing like observing how they are in nature. You think you have flow? 
http://www.harbourvillage.com/webcam-en.html
http://www.harbourvillage.com/webcam-en.html
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Questions about flow and fish-density---look here. Reef cam.
- Thread starter Sk8r
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SFish
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SFish
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Good links. One problem with reef cams is, well, flow. A lot of it. They're always going down for months on end.
The thing that shocks most people is the flow rate---kind of like a fire hose active in the water; and the speed of some of the fish. When you set up a tank to house creatures who were born and caught here in the wild---oxygenating the water to the level these creatures are used to, keeping the nitrates and phosphates down, keeping the water moving like this without blasting any single coral in the process---is a challenge. Modern equipment makes it easier. But think about it as you set your tank up.
The thing that shocks most people is the flow rate---kind of like a fire hose active in the water; and the speed of some of the fish. When you set up a tank to house creatures who were born and caught here in the wild---oxygenating the water to the level these creatures are used to, keeping the nitrates and phosphates down, keeping the water moving like this without blasting any single coral in the process---is a challenge. Modern equipment makes it easier. But think about it as you set your tank up.
I try to make my fishes work for a living. And there are flow-shadow places they can rest, but if they're in open water they're going to fight current, dive and move. I keep damsels, and one they they are is get out and move, about. People ask about fish in schools, well, yes, if there's a predator or if they're traveling, but if they want fish to do what they do on the reef, an active flow also organizes fish movement, all facing the same direction, all moving together in a dive or duck under the pressure.
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