Clown79 Posted June 5, 2021 Share Posted June 5, 2021 Bubble algae. You can gently twist and pry them off to remove them Quote Link to comment
Dave MN Nano Posted June 6, 2021 Author Share Posted June 6, 2021 Thanks much. They were all on the frag plug so I took it out and easily got them off. Quote Link to comment
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