Not to argue with anyone here, but I have access to fresh manzanita. All I did was stand it upright in the yard for a few months to dry out. I then placed it in my tank, the bark grew some sort of white fungus I would call it. I had a sail fin pleco at the time, he went absolutely nuts for this fungus. The bark is a PITA as it falls off over time, taken out with the gravel vac. There was some tannins leaching into the water, cleared up by placing carbon in the filter for a few days. Again I'm NOT an expert on this subject, just sharing my personal experience. I have a manzanita tree drying out now for placement in my new 450 I'm in the process of setting up now.
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