Nearly all plecos will rasp on wood, that's just what they do. The main groups of plecos that actively consume wood are Panaque/Panaqolus and some Hypostomus species (the Hypostomus cochliodon group). But even with those classed as 'wood eaters' your wood isn't going to disappear overnight. I've had pieces for years now, they just get gradually worn down.
They're not really going to destroy the wood. I've had my pleco and the same piece of wood for 6 months and he's on it all the time and it looks untouched.
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What kind of species would be classed as 'Non-wood eaters'? I just want my wood to look good and stay in tact for as long as possible.
I just thought since I read somewhere here that someones pleco tore their wood to pieces?
yeah don't get discouraged by the eating wood factor. They don't eat the whole dw. They graze on it occasionally I've had my driftwood the same one for 6yrs now and still the same intact and it's missed very small pieces to even notice the difference some missing pieces might even be due to my carelessness in handling the dw during water changes. They feed on algae and shrimp pellets. So don't be discouraged your drift wood will be fine. GN is my fav too so i know what your thinking but trust me it's not like you think.