None of mine (I've had probably 30 different tang species during the last 8 years) have ever consumed h.a. that I've noticed, and I would have noticed. Maybe I feed the fish too well.
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To do it right, dismantle it, move it, and put it back together at the new location. Would probably need new felt. I'd guess around 500 bucks. Or, you could move it as is, but it could get messed up and get warped, etc.