I don't even know what to say, except itโs pretty obvious you didn't realize head cleaning eats up ink... and it eats a lot of it...
The whole point of cleaning is to force ink through the nozzles under pressure so they don't clog up. All that extra ink just ends up sitting in a waste tank...
Iโve actually managed to drain an entire set of ink for an HP while trying to clean the printhead myself, but those were tiny 5ml cartridges. Yours should be bigger than that. Still, if you ran the cycle a bunch of times, anything is possible ๐คท
Editor:
Oh man... looking at it now, yours are also 6.5ml. It is totally possible you drained them dry just by cleaning. That is ridiculous:
third-party 6.5ml cartridges have the nerve to call themselves "XL" and cost $12????? What the hell is the volume on a non-XL then? ๐ฑ
A real candidate for a Canon setup:
http://www.ebay.com/sch/i.html?_from...+wf-2520&rt=nc