[Trayder]

I installed a keep alive system on my Contender and it defintly helped. I noticed a vast improvement in the quality of my baits and I was able to keep many more in the well. My system had one pump for bringing in raw water and another pump within the well to cirulate the water and infuse it with air.

I also have keepalive pumps in my truck's herring wells. They work well but the key factor is keeping amonia levels to a minimum . On a closed system the keepalive will not work much better than a plain pump unless you add additives to the water to keep toxins down.