I decided to just get a canister filter. The overflow box would have set me back $65, the return pump $40-$60, the tubing etc. approx. $15, tank $10, glass/plastic dividers $?, silicone $10 ...... and then there's the fear that the 10 gal
sump (which is all that will fit in my narrow stand) will overflow in an outage. Went with canister - which I'm used to and comfortable with. Thanks for the help. Did notice that the LFS
has Rubbermaid bins willed with bioballs and/or live rock as sumps. I'm sure it's simple, but with the limited space I have I don't think it will work.