Steve Fox

You will have to do some investigation into your conditions. Know that there are specific reasons that a fish would die within 30 minutes of being placed within your livewell: 1) It could be a big temperature difference between the water that was filling the livewell and the water where the fish was caught. Does the pump for livewell #2 heat up this water? Go to a lake and start to fill up the livewell #2 to the typical depth and place your hand in the tank. Is it much hotter or cooler than the water in livewell #1. 2) The PH level between your livewell and the fishes water could be extremely different and therefore cause the death of your fish. I would get a PH testing kit, fill the livewell with water just as you do when you are on the water and then test the water within the livewell. This is a simple test that will tell you if you have an imbalance caused by the water filtering in through your pump. 3) An unwanted chemical is being added to your second livewell that could be poisoning the fish. Again take a sample of your water (do not taste it by mouth) and have the water examined by chemical breakdown. If there are too many "other" compounds in the water then the pump is somehow adding these chemicals to the water and the fish are dying. However, I would first find out the results of the water in livewell #2 before I do anything else.