↑↑↑↑ What he said ↑↑↑↑
http://www.inkbank.com.au/category105_1.htm
Been using Calidad generic ink in my Canon's, HP's and Lexmarks for around 12 years now. Initially, until I understood what to do fully, there were issues, but haven't had a problem since an industry refill guy told me what/how to do it PROPERLY (chips, cleaning the tank properly, replacing or cleaning the sponge properly etc). Currently on my 5th Calidad refill for the HP all-in-one we have at home, and it can sit MONTHS sometimes before printing a page (no issues with coagulation or clogging). In fact, I have had some refills outlast the printer! (LEXMARK)
Youtube can be your friend:
https://www.youtube.com/watch?v=WJQ1FQ68lU8
IT really is THAT simple - HP, Canon, Epson etc. Clean well, know how to reset them, use generic ink, save a BOAT load.