The Ultimate Black Fineliner Showdown (No Ghosting Allowed!)

Okay okay okay I HAVE to talk about the eternal struggle of the bullet journal community: finding the perfect black fineliner that actually behaves in a Leuchtturm1917.

Look, I love my Leuchtturm. The paper is fantastic, the dots are the perfect opacity, but we all know the ghosting can be real if you're not careful. I've spent the last three weeks testing every fineliner I could get my hands on—from the holy grail Japanese imports to the budget finds at Target—because I needed to know which one actually works best for those crucial weekly spread borders.

Here’s the thing: a weekly spread is only as good as its foundation. If your grid lines are bleeding through to next week’s to-do list, it completely ruins the magic. So, I grabbed a fresh page, my favorite ruler, and got to work.

The Reigning Champion: Sakura Pigma Micron (01 & 03)

I know, I know. It’s not a surprise. But there’s a reason we all keep coming back to Microns. The archival ink is waterproof (which means you can go over it with your Zebra Mildliners immediately without smudging—this is CRITICAL), and the 01 size is absolute perfection for habit tracker grids.

The Verdict: Practically zero ghosting on the 80gsm Leuchtturm paper. Crisp lines. If you're building a structural system, this is your tool.

The Smooth Operator: Tombow MONO Drawing Pen

Okay so... I actually prefer how the Tombow MONO feels when I'm drawing. It’s slightly smoother than the Micron, making it amazing for doodling or cursive headers if you're not using a dual brush pen. However, the ink flow is a tiny bit heavier.

The Verdict: You will see a slight shadow on the next page. It’s not full-on bleeding, but it’s there. I use this for headers, but stick to Microns for my heavy grids.

The Budget Bestie: Sharpie Pen (Fine Point)

Listen, you do not need a $4 art pen to start planning! The standard fine point Sharpie Pen (the one that specifically says "won't bleed through paper," NOT the permanent marker) is honestly fantastic.

The Verdict: It gives a slightly thicker line, so your spreads will look a bit bolder, but it truly does not bleed through. You can grab a multi-pack at the grocery store for a few dollars. It’s the perfect entry-level pen if you’re just starting your system and don't want to overthink the supplies.

The Disappointment: Muji Gel Ink (0.38mm)

This breaks my heart because the Muji aesthetic is top-tier, and I use these for actual note-taking constantly. But for drawing structural grids in a Leuchtturm? The gel ink just sits wet on the page a second too long. If you're rushing to finish your Saturday morning setup and you drag your ruler across it... disaster.

The Verdict: Save it for writing tasks, skip it for drawing your spreads.

At the end of the day, your planner is YOUR system. If a little ghosting doesn't bother you, use whatever pen brings you joy! But if you want that crisp, clean foundation before you start layering on the washi tape, stick to the Microns or the Sharpie Pens.

What are you guys using for your grids right now? Have you found a miracle pen I missed? Let me know!