rbta from rock
This is how I've loosen those dozen or so rbtas for the local frag trade shows. Materials required heavy duty garbage bag or any light -impermeable material, suitable container to place over target, 0.5 inch screws. Wrap material however many times around container leaving opening at top and decent excess material at base. Place cup over anemone and screw cup down onto rock. Just a matter of time b/4 anemone release from rock which has now become unfavourable anchorage point and move into container toward light source at top. No need to take rock out if you're willing to get hands wet.
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