Hey reefing fam! I just want to be sure, are the white spots on the glass (in the back) of my tank Spirorbid worms? they're hard to scrub off when Im cleaning the glass.. thanks in advance!
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Cool! Thanks for the reply. I can't seem to get rid of them no mater how hard I scrub or how many of them I scrubbed off. Yup, they certainly look like it. Very common in new tanks.

You are so awesome. Thank you.You can scrape them off pretty easy with the edge of an old credit card. Most people leave them as part of the clean up crew. Their numbers typically slow down as the tank matures. They only really become a problem if they start building up in the plumbing/filtration. Those are the areas I'd keep an eye on and remove them as necessary.

