Corner overflow

[Dixon81]

Make a double wall setup if you can. That way you can bring in water from several levels instead of just skimming the top.

Good idea. I will just make the back wall a little smaller and a little lower.

 

[zennzzo]

Make a double wall setup if you can. That way you can bring in water from several levels instead of just skimming the top.

Good idea. I will just make the back wall a little smaller and a little lower.

Couldn't the same thing be accomplished with holes drilled just above the substrate and across the top?