Canon PIXMA G6020 MegaTank Ink: GI-21 Refill Bottles | Castle Ink
Last Updated:The Canon PIXMA G6020 MegaTank all-in-one printer uses Canon GI-21 ink refill bottles in four colors. Unlike traditional cartridge printers, the G6020 features built-in refillable ink tanks that deliver thousands of pages at the lowest cost per page.
Ink Bottles at a Glance
| Bottle | Color | Approx. Yield |
|---|---|---|
| GI-21 PGBK | Pigment Black | ~6,000 pages |
| GI-21 BK | Dye Black | ~3,800 pages (photo) |
| GI-21 C | Cyan | ~7,700 pages |
| GI-21 M | Magenta | ~7,700 pages |
| GI-21 Y | Yellow | ~7,700 pages |
The GI-21 ink bottle family is also compatible with the Canon PIXMA G7020 MegaTank printer.
Save on GI-21 Refill Bottles
Castle Ink offers premium compatible GI-21 refill bottles at significant savings versus Canon retail prices, with a full satisfaction warranty and free shipping on qualifying orders.
How to Refill Ink in the Canon PIXMA G6020
- Turn on the printer and open the scanner unit; the ink tank cover is now accessible.
- Open the ink tank cover for the empty tank (front-mounted, visible from the front of the printer).
- Twist the bottle cap to open and insert the GI-21 bottle into the tank's filling port.
- The bottle dispenses ink automatically; stop when the tank reaches the upper line.
- Remove the bottle, close the tank cap, then close the scanner unit.
Troubleshooting Tips
Print head not detecting ink: After refilling, perform Reset Ink Level via the printer's touchscreen so the printer recognizes the new ink.
Streaky or faded prints: Run Print Head Cleaning from the Maintenance menu — deep cleaning may be needed after long inactivity.
Air bubbles in tank: Gently tap the side of the ink tank to release trapped air after refilling.
Mixed pigment/dye black: Make sure to refill PGBK (pigment) only into the PGBK tank and BK (dye) only into the BK tank — they are not interchangeable.
Official Canon Resources
Canon PIXMA G6020 Support · Canon Genuine Ink
Bottom Line
The Canon PIXMA G6020 uses GI-21 refill bottles (PGBK, BK, C, M, Y) for ultra-low cost printing. Castle Ink compatibles save even more versus Canon OEM — shop GI-21 ink bottles now.
Frequently Asked Questions
Q: How many bottles does the G6020 use? Five — PGBK, dye BK, Cyan, Magenta, and Yellow.
Q: Can I use GI-21 in the G7020? Yes — GI-21 bottles are compatible with both G6020 and G7020.
Q: How long does a set of bottles last? A full set prints up to 6,000 pages in black and 7,700 in color (ISO standard).
Q: Are Castle Ink GI-21 bottles safe? Yes, they are formulated to OEM specifications and include a satisfaction warranty.
Q: Do I need to reset ink levels after refilling? Yes — follow the printer's prompt to confirm the refill so it tracks remaining ink correctly.
— William Elward, Castle Ink