max spec gyre from my 40

[asylumdown]

I'm digging mine. 2 on a 275 gallon.

My biggest complaint is also their biggest selling feature - the flow pattern they create truly is a 'gyre'. It means that if you've got something annoying like internal overflows, or an oddly shaped tank, you're giving up a heck of a lot of flow efficiency.

If I had gyres from the start, I would have planned both the tank, and the aquascape differently.

Of course this means I've got a spring project

[boots]

Thanks for the tip. I've got a 180 gal bow front with internal over flows.