Actually, Lamy eats all kinds of ink. At present, I use Olindan carbon. I used it for a long time, and I didn't find the phenomenon of pen blocking. Slightly white, a few strokes can solve it. Ink recommendation: In fact, Belle Gold 400 1 is very good, with good cost performance, but the price is less than 50. If the price is not expensive. Never use hero ink, not only the color is light, but also the paper. Very, very bad. I know. The ink of an ostrich is similar to that of the boss. But I personally prefer ostriches, because I can't stand the boss's ink and a bunch of fragrance series. In fact, lamicin, no matter what ink is ok, personally, don't use it too well, after all, it's just writing. If carbon ink is used, it can be cleaned regularly. For example, I write a lot of words every day and wash them once a month. It's not commonly used every day, and it's not too late to clean the pen cover when you don't print. To sum up: not a hero. If the color is dark, recommend Olindan carbon or ostrich, and color ink recommends ostrich. Remember to wash your pen regularly ~ I hope it will help you.