Hi. I am in the process of setting up a 125g. Is it OK to use a similarly sized new plastic bin for my sump versus a 20 gallon glass aquarium? 
Originally posted by BrianH
If your choice is between a 100 gal or so tub and a 20gal glass tank I would go with the rubbermaid sump. I like the idea of more water volume.
JMHO
Brian