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Is this Coralline?

smarthawk

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Hi all! Tank is about 100 days old. Within the past couple days I’ve noticed these little dots on the back of my aquarium. There’s also a couple on the powerhead and a return nozzle. It doesn’t fluoresce but it’s a solid color and looks lightly pink. Can anyone help ID? Thanks!

7FDA89B1-4E27-4D4E-9889-431D032416C0.jpeg 9BA6E3C0-5ED5-43AE-BBCA-FEC5BBE8C5C2.jpeg
 
Top Shelf Aquatics

Vette67

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If they are purple or pink, then yep. If you want it to grow keep your alkalinity above 8.4dKH balanced with calcium and keep the flow medium to high.
I’m wondering where you came up with that 8.4 number. That’s oddly specific. I keep my alk below 8 and grow more coralline than my urchins can eat. So I’m curious about where that number came from.
 

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