[fatbird]

My friend, you owe it to yourself to try Platinum Carbon Black ink. More permanent and waterproof than Noodlers, and a black so dark and dense you'll think you can see the end of the void in it.

Ignore the haters who claim pigmented ink wrecks your pens--both my wife and I have drawn miles of lines with it, and even leaving it sitting on the desk unused for weeks, we never have a problem with it.

[kstrauser]

Also, in fountain pen terms, Safaris are so reasonably priced that you can dedicate one to a specific ink. I mention using Baystate Blue. I might not put that in the same pen where I'd later use, say, yellow ink, but I don't have to.