This is awesome.
http://www.youtube.com/watch?v=ir3FTLCqbKA">http://www.youtube.com/watch?v=ir3FTLCqbKA</a>
If I were running a huge setup close to 1000g, I'd seriously consider using something like this. It looks a TON cheaper than a million power heads -- using less electricity to only power a single pump, more realistic water movement, etc.
I ran two mini carlson surge devices on a 58 gallon reef I had in the mid 1990s. they were cool, but toms of salt spray and tons of microbubbles- which I thought were cool at the time!
Dave