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Re: Heating coils revisited

On Fri, 7 Jul 2000, George Booth wrote:

> ... no one that I know of still has any idea of what a 
> proper substrate circulation current should be. But if these examples did 
> produce viable tanks, now maybe we do!

Just to clarify, my numbers were not from a viable planted tank.  The
flow rate I gave was from an under gravel filtered, fish-only tank with
a loose, clean substrate.

Roger Miller