Ni,

There are black residues on the reservoir walls and on the suface of the electrolytes in the reservoir.

However, the electrolyte seems clean but a slight yellowish

The distilled water in the bubbler is clean

Do I have a problem or is this normal at the start of a new reactor (only 250 km) ?











Last question, when the electrolyte level down in my tank, I might add only distilled water or a mixture of my electrolyte?

Thanks in advance
Your help is appreciate