What is this spider thing on my glass

MantisShrimpMan

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While looking at my tank, I thought I noticed a crack. Upon closer inspection the lines I thought were a crack belonged to some sort of organism sitting on the glass, and while there’s only one or two big enough to be easily seen, a more thorough inspection revealed there were at least a dozen more.

I’m hoping it’s just copepods or some other friendly critter but something tells me it’s gonna be a pest. Praying it isn’t aiptasia tho. They kinda look like you asked a 3 year old to draw a spider, and they’re about the size of a pinhead.

B4D5C1F1-7402-43D1-901A-D1A0A0DC30A5.jpeg
 

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