Just a note for comparison... my pond was only 2 years old when I added aeration. And it already had a terrible rotton egg smell. I never expected that in such a young pond but gradually increased and all went well. Point being for others new to ponds....it does not have to be very old to get that obnoxious dangerous smell!!

Dear Alcohol, We had a deal where you would make me funnier, smarter, and a better dancer... I saw the video... We need to talk.