Thanks for your help Bill.
Well my perch eggs hatched yesterday and are doing fine. Right now they look like a bunch of black dots with a translucent body wiggling behind it. I think there are only about 50 to 75 of those perch fry. I made a zooplankton catcher useing a 1 gallon plastic bottle and zooplankton screen. I pump pond water into the gallon bottle and the screen lets the water out but keeps the plankton in. It works pretty good. I put the fry into a 2gal bucket with airation. My thought there was to keep the fry and the zooplankton in closer proximity to each other. That cooler seemed a bit too large for the amount of fry I have.
Again, Thanks for your help.