Yes the aquaclear is a spill over and the edit "trough" is nearly touching
the water to create less surface turbulance for C02...it's a mild current
but enough to push the ludwigia stems a few inches down. It will in no way
rip anything out of the gravel though.

Dave.

"Dave Millman" wrote in message
...
"Dave M. Picklyk" wrote:

I have a small 15 gallon wide tank and an aquaclear filter on the back.
I
had kept a spot empty where the water falls out of the filter assuming
that
some plants don't like heavy water movement. Is this true?

An aquaclear has a spill-over return, right? So the current is pretty
mild. It's
just a matter of how much movement you want, or how much bending with
stiffer
stems. I prefer no movement or bending, but the choice is yours.

In the case of power heads or cannister returns, the current can be
significant,
and can rip some plants right out of the gravel! In that case, it's
probably
more a matter of practicality than personal choice.