The ink in my tanks is disappearing and I do not know where it is going?
Answer: Printer and ink tanks must be on the same level surface, i.e. bottom = bottom. If ink tanks are raised above bottom of printer, i.e. on a shelf, book, etc., remove and place on same surface as printer.
It is also important that you place the external tanks next to (so level with) your printer.
Don’t put them at a higher or lower elevation than your printer as thismay affect the flow of your ink from the tanks to the cartridges inside the printer) (as shown)