Is this sump too big??

[PerplexyHexy]

I have a 100 gallon acrylic sump and a 100 gallon rubbermaid trough for my 300 gallon frag system... both were by far one if the best parts of my setup... having a 40 gallon refugium is nice... hahahahhaa

 

[roberthu526]

I would double the size if I had the space. Never a sump too big. Bigger dumps make the maintenance easy and the water parameter stable.