What do most people think of putting in a Under Gravel Jet system. For a SW tank. I was goingto be doing this today before I put in my new sand and coral and was wondering how many use it?
Not an undergravel filter but 5-6 jets under the sand peeking out that keep water movement over the sand and coral peice's. exactly like this one. http://cichlid-forum.com/articles/ug_jets.php
I've never tried it, but can see how it might be doable, but it would be a lot of work to get it set up and functioning before you start the tank. I wouldn't try it after adding live rock and other livestock.
I will have to admit that I have never seen the design of this system. My only concern would be how do you control the flow on these pumps? You don't want to have too much flow disturbing the sand bed all the time.