I thought it was pretty obvious what the conversation with my self was, but I'll give you the longer version.
The Eheim 1262 that returns water to my 40B display had slowed to a trickle, so I was thinking that I needed to replace the pump with one more adequate. A light bulb went on and said, "Doh! Idiot clean the prefilter." The prefilter on the pump was so clogged that it couldn't get any flow. Now that it's all cleaned, it's like I turned on a garden hose in my tank.