I just removed mine manually. I grab the base of it gently and just lift up. I did pop a couple but never had it come back once I removed it. I do have many red mithrax crabs in my tank and I had 3 pincushion urchins at one time that really took care of alot of it. I just got sick of looking at it and removed about 30 bubbles or so. Wasn't difficult.
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