diff --git a/PLAN.md b/PLAN.md
index 181b765..138608d 100644
--- a/PLAN.md
+++ b/PLAN.md
@@ -1001,6 +1001,11 @@ what it has moved.
 
 ## To do
 
+- **Handle `fuse.mergerfs` in the Storage view** (2026-10-25). `grid` has a mergerfs pool at
+  `/srv/tank` (the NVMe landing area + `/tank`; `hamlet`'s `docs/tank-landing-plan.md`).
+  `fuse.mergerfs` isn't in `remoteFS` or `pseudoFS` (`internal/metrics/metrics.go`), so it shows
+  as a local filesystem whose size is `tank` and the NVMe added together. That counts both twice
+  in any storage total. Show it, labelled as a pool of its branches, and leave it out of totals.
 - **Grow the Files tab** — asked for 2026-09-23 as two items (Files polish, and deprecating
   copyparty), merged 2026-09-24. **copyparty was retired 2026-10-11** at Mitchell's call,
   ahead of these gaps rather than after them: service, files and NPM host all gone, with a