Surge tank experience?

[WWWD]

Rikko used to run a flapper style on on his tank, I think he said it worked pretty well but was noisy.

OA back in the day also used to run a fairly sizable surge device on one of their 4x8 holding tanks, Im not sure what method they used but it was a pain in the ass when you were looking at a coral to buy and every 60 seconds a wash a bubbles clouded out the tank and you had to wait for it to clear.