Originally Posted by bigfishy
Refer to the second picture:
I still don't get it, how can those holes half way up in the sump can be attach by an external pump?
When you can just place an internal pump in the open area.
What's the purpose of having the media bag at the end up of the sump (left side)? when the water doesn't even pass thru it
Those holes have nothing to do with an external pump...they were when I bought it. The open area was used for a skimmer as this sump was used on a FOWLR tank.
The hole is on the left AFTER the foam. You just can't see it.