Closed loop

[Silverfish]

Thanks guys, for the input.

Are there any pumps out there that could handle a wavemaker? I suspect that they would be too expensive anyways.

How about simulating a 6 hour tidal cycle with the closed loop? Timers are cheap. :D

Darren, are you going to run 1.5" pvc into the mag 7 as well as out? I suppose you could run smaller diameter pipe into the pump and larger pipe out.