I had a case of super ick wiping out my fish in the display... but the corals are fine

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Here is a webcam of my fish tank 200g/100g sump
Drop Cam Pro - Streams 1080p
https://www.dropcam.com/p/VhCu5O
Acans, Chalices, Lps + ton of coweries, fireshrimp and inverts.