[Naz]

So today I woke up and noticed everything in the jar had turned brown and the water has a slight brown tint to it.
The opae do not seem to be behaving any different apart from being a little more active for what they be normally during the day as they tend to come out more in the eve and night.
I tried to take some pics but hard to see especially the water tint but if you look at the white of the shells you can see they have turned brown.
Is this a bloom or should I be worried?