Adjusting Sumi Ink Drying Time

[Origamifan92]

Is it possible to make sumi ink not dry between tines? I recently bought an Ackerman pump pen with a Manga G nib, and was perplexed with how the ink flow suddenly stopped working after leaving it for a bit. After some fiddling with the pen, I discovered that the ink managed to dry in between the tines just enough to become too sticky to flow. Is there anything I could add to the sumi ink that I can just take off the lid and go, rather than finding a way to always take off and clean the nib, wasting all too much ink? I had originally bought the ink for my fountain pen, not previously knowing that it was ill-suited. When I discovered that error, I found out that I couldn't return the ink, so I looked around and found the Ackerman pen. Is there much I can do about my current situation?

[Reissmann]

I've tried messing with Sumi ink because I wanted the characteristics of it in a fountain pen, but I was never able to maintain that and just ended up with a grayish black ink. However, it did not clog nearly as much. If you don't have any other use for the Sumi ink, you can just mix it with another black ink (or maybe a colour?) so that you don't waste it. It will still dry between the tines, but only over the course of a few days if you aren't using the pen.