Can You Use Watercolour In The Leuchtturm1917?

In the past, I’ve talked a lot about how to use a bullet journal. You don’t want to spend all your time decorating your bullet journal and forget to use it as a planning tool. I’m not saying you can’t decorate your bullet journal at all. I enjoy decorating my bullet journal pages, I don't decorate to the same extent as some others who use bullet journals. But I do use a lot of art...