Yes, bristlenose plecos need wood. Placing driftwood and wood bark in the tank will greatly benefit your bristlenose plecos. In fact, failing to provide your bristlenose plecos with wood might even cause them to die prematurely.
Bristlenose plecos generally nibble on wood to supplement their diets and aid their digestion. Additionally, the wood in the tank can provide extra hiding places, making them feel more comfortable and at home.
Bristlenose plecos aren’t picky about what type of wood you provide for them. However, they usually prefer softer woods, such as Malaysian driftwood, grape wood, and cholla wood.