true, but after having put up more then 10 whishing wells in 1 city to get some diamonds, i kinda prefer that method now instead of replacing the wells. Im not good with the 12 hour timer, it doesnt suit my playstyle which means i can only collect 5 times in 4 days or so. If they wouldnt expire i wouldnt mind missing a collection that much. Maybe i should make a suggestion to change the whishing well to 600 collections instead of 300 days...