From my experience, trumpets usually open up at night when the main lights turned off, or when feeding. What kind of water flow is it getting? If there is no color change or obvious signs of issues, im sure its just fine
My remain closed most of the time as well.
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- 33 Gal - 20Gal Sump, MP10/Hydor Powerheads, Aquaticlife 4x T-5HO, Vertex IN100, TLF w/Biopellets, Tunze ATO
-45GAL Build in Progress!-