Pond Boss Forums INTRO Questions & Observations Water Temperature

jdmcalf. Doing what you are currently doing may also kill your fish. As Dave says well water can sometimes have very little dissolved oxygen in it. You should first check the dissolved oxygen (DO) levels of the well water before releasing it into the deep water zone. If you have no test kit for measuring the DO you could do a simple survival test with a fish. Run nonsplashed well water in to a large tub with the majority of the water injected below the surface similar to what you are now doing in the pond. You should try to closely match the pumping and injection method you are now using. Put a fish in the tub and see if it survives a minimum of 24hrs. Make sure the fish is acclimated to the well water temp before adding the fish so you can be fairly sure that it was not a temperature shock that harmed the fish.