I think you misunderstand. No issues dipping the coral I can pull out. Just can't dip every coral and every rock.I prepare a dip 20 mL Bayer per cup of water and dip for 20 minutes. It’s a little bit more than the usual 15 minutes but the Bayer is very gentle on the corals. Then I dip in Reef Dip iodine-based for another 20 minutes. Then in untreated tank water for 5 to 10 minutes to rinse. Let me know if you have any questions