Is this what happened to your tunicates?
Everything grew like a thin layer of "stuff" over it.
But this "stuff", whatever it is, can be blown away with a turkey baster.
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150 gal Custom. Born 5/7/07. 50gal, 29gal, 20gal Sumps. 30gal Frag Tank. ETSS 800 Skimmer, Deltec APF600 Skimmer. PFO Solaris Lighting on Display and Frag Tank
My Tank Thread