Yes, but you could also look at real wood too. Some plecos need or at least like wood to graze on. BNs are a bit iffy in that way; some say they "need" wood. Or do a combo of wood & the ceramic tube, give it a choice. Might be hard to break his sponge filter hiding habit...
My local fish store carries Manzanita so may get some of that since it supposedly doesn’t stain the water.