Algae ID with microscope pics

Deltec

beesnreefs

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Hoping someone can help me ID this stuff.

2E16DDFC-29EB-4FDB-88B3-8A276FCA583B.jpeg

Sample of patches on a rock.

C040F149-14B8-4CF1-BEA6-CDB85F0CA217.jpeg

At 40x under microscope

51669C17-098C-42A1-BE0D-2BE612890FC1.jpeg
At 100x under microscope
 
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vetteguy53081

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Looks like an algae called derbesia which is confused with bryopsis and needs to be pulled by hand but most important is to remove the roots. If the roots remain, it will keep coming back. A dental pick or small crochet needle will pull them well
Then reduce white lighting intensity or number of hours white light is on and add some large astrea snails, chiton snails and pitho crabs for control
 
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