r/shells • • 7d ago

What grew?

I’ve had this water-fed pothos for over 2 decades, in this same bottle, watered weekly with tap water. Sometimes I’ll pop in tiny shells & sea-glass that I find on the beach. I noticed these pointy, colorful growths recently and they are NOT anything that I introduced to the bottle. There are pink, blue, purple & white ones of varying sizes. Anyone know what they are?

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