Water motion in tank.
but Darren thats the idea.. if I make a tidal system then i don't need power heads in the tank and the tiday will be controled by one pump. (thats why I am going to give making this valve a try at work) it doesent seam hard at all to do. And if I make a rack for my live rock I could maby have a small power head pumping into that and have a slight curent pushing out from under the rocks. I was going to start making it tomorrow but I am having knee surgery on friday so I will put it off for a couple weeks.
about the tropical tides.. yes there are tides about 12 foot tide in Hawaii (been there over 20 times) and in Hanuma *sp bay there is a alternating curent that when you are diving moves you about 10 to 15 feet in one direction and then back again.. and the small reef that is 4 to 5 feet out of the water at low tide is about 4 or 5 feet under water at high tide.
it wasn't the hight of the tide I wanted to replacate it was the predomanant direction of flow during the tides..
Steve
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