Can I add it to an existing save?

Yes.

Can I remove it from a save?

Yes. Belts go back to the vanilla look.

Does it change belt speed, recipes or research?

No.

Does it change fast, express or turbo belts?

No.

Can I use canals for wooden or basic belts from another mod?

When Lignumis, Wooden Logistics or Bob's Logistics is enabled, the startup setting "Canal belt family" offers its supported family. The belt, underground belt and splitter change together. Yellow belts keep their normal appearance when another family is selected.

The setting is hidden when only yellow belts are available. If another mod's settings disable the selected family, canals fall back to yellow belts. Changing the choice requires a restart and updates existing belts' appearance when the save loads.

Does it work with Space Age?

Yes. Frozen canal belts on Aquilo don't show frost. Use alt-mode to see which ones are frozen.