Planted Tank Guru
Join Date: Dec 2012
Location: Hot Springs Ar. 71901
I would think the trick there would be to keep the water coming out of the filter balanced as much as possible/w the outflow from your ditch.
But then I can't imagine anything like that looking natural.
Oddly I've been day dreaming on basically the same thing, only on one end.
I planned a same level sump on the end/w air to bring in water to it. That would give
more Oxygen to the water going INTO the filter. A siphon would bring it back to the tank
on the end and I'm stuck on the design of that end piece. Plan on it being great stuff foam/w grout over it so it looks like a rock but like you I don't want it to take up much room even on the end. The intake would be hidden in that "rock" also.
In my case the air should likely be used to remove water from the sump. Don't get that
benefit I mentioned before that way, but I think it would take up less room for the rock if I didn't need to hide that in it.
The shortest distance between any two points is a straight line...in the opposite direction...