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I found that the seal provided from outside of bowl / inset was not great , I had to replace this with a std tap seal . I also had to sikaflex the inside of the fitting as well . ( it was leaking without the mods only a very small trickle but important when water restrictions are in play ) . Other than that easy to install , chickens love it and it offers a solution to forgetful children not doing there chores ( filling up the water for the chickens ) looking to buy another for the thirsty dog .