@@ -780,7 +780,7 @@ computation time. You can run this at the dojo with `-time ~s1`.
780780```
781781
782782This is uses `lib/ph/io` to run a pH test. Aqua and pH are described
783−[elsewhere](@/docs/tutorials/hoon/hoon-school/aqua.md), but if you've initialized Aqua by running `|start %aqua` and
783+[elsewhere](@/docs/hoon/guides/aqua.md), but if you've initialized Aqua by running `|start %aqua` and
784784`:aqua +solid`, then you can run `-ph-add` to execute this thread.
785785
786786It starts by running some virtualization initialization with