Hello,
a closer inspection of my water tank yesterday to my big shock revealed the following charcoaling (see picture) which the previous owners had skillfully covered up ...
Does anyone know what might have happened here and whet needs to be done / can be done? Many thanks for any help.
a closer inspection of my water tank yesterday to my big shock revealed the following charcoaling (see picture) which the previous owners had skillfully covered up ...
Does anyone know what might have happened here and whet needs to be done / can be done? Many thanks for any help.