Here is the filter I made for the livewell. It’s just a Tupperware container with a hole cut out in the bottom. I heated up a nail with a torch to melt all of the holes. The intake pipe fits in the hole and it’s secured with the screw-on wire screen filter. I made lots of small holes (1/8-1/4” approx) in the Tupperware container, making sure to put a bunch towards to bottom to pick up all the poop and scales that settle to the bottom. I just fill the container with polyfill and put the lid on. I also use two to three cups of rock salt and keep the pump on recirculate. I’ve had no problem keeping shad alive and healthy for 5-6 hours.