Thanks Larry. The buckets showed the same color outside. I spoke with AO Smith and they said it could be Aluminum Hydroxide resulting from a high PH water mixing with the aluminum anode rods. They advised me to test the water then change both anode rods for magnesium rods. And of course the primary anode is covered by the fan which has to be removed to get to the anode…
I am getting the water tested by the water company tomorrow so we will see what’s going on hopefully.