I have a Royal Pleco/Panaque. He eats driftwood regularly as that is a big part of their diet. I read that in the wild RPs (& other wood eating species) eat mostly from the outter layer of branches/trees (ie bark). There is not typically bark on storebought driftwood, so I am wondering if some DW is more nutritional than others. Are there safe nutritious barks/outter layers of branches that I could add to my tank to improve the RPs diet? I know about the dietary thread on Plecos, I am just refering to the DW part of their diets and how it can be optimized. Help appreciated. Thanks.