Haven't tried the Carlson surge, did try a toilet flapper surge a few years back and it worked well for while. I eventually stopped it though because the float kept getting jammed in the bucket I was using.
There's no getting away from bubbles with surge devices (you can minimize them though, of course, but not really eliminate them) so there is some increased salt spray on your glass and so on.
But they're a great method to shake things up in a tank .. I keep wanting to go back to having a surge tank or two on a tank.
The nice thing about the Carlson surges are no moving parts, so as long as you can get it tuned right it should work awesome.
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-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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