So I went and got a Emerald Crab (female) to help with some of the algae. Well last night I'm doing my normal night time spot lighting and I see it perched on my purple stylo. From what I seen it wasn't eating it just perched up on it. Should I be concerned? When I looked today the stylo looked completely normal so I don't know what to think. Should I keep and eye out to see if its a reacuring thing then be worried, or just get it out now just to be safe?