This article shows the compatible ink tanks for the PIXMA MG7720. Ink tank volumes are included.
Other ink tanks (such as the PGI-250 PGBK and the CLI-250) are not supported by this printer.
The inks shown below can be used in this printer.
PGI-270 PGBK ink volume: 15 ml
PGI-270XL PGBK ink volume: 22 ml
CLI-271 BK/Gy/C/M/Y ink volume: 7 ml
CLI-271XL BK/Gy/C/M/Y ink volume: 11 ml