I have too much flow.

[SeanT]

I have two, 3/4" Sea-swirls powered by a mag-18, creating 1700 gph in my 75 gallon tank.
Woke up with sand dunes and glass spots.
No question ...just ranting.

[colemanitis]

A Mag 18 - good Lord! Is there such a thing?

[SeanT]

Yeah, they put out 1800 gph.
They also make Mag 24's...and you guessed it, 2400 gph.

[CJ31]

Not to mention the Mag 36's, guess how much they put out ;)