Blue Skimmate?

[MarkoD]

I adjusted it. It's thick and black

[daniella3d]

To me it looks like some algae concentrated in there. Maybe some green/blue cyanobacterias? They can be quite colorful. As long as there is none in the water that is concentrated enough to be visible I would not worry.

Are you dosing any carbon?

[MarkoD]

Originally Posted by daniella3d

To me it looks like some algae concentrated in there. Maybe some green/blue cyanobacterias? They can be quite colorful. As long as there is none in the water that is concentrated enough to be visible I would not worry.

Are you dosing any carbon?

Just put a new bag in yesterday

[marie]

I would suspect some algae in your tank sporulated which would also explain why your skimmer is wetter then usual

[daniella3d]

No I mean like dosing vodka or other carbon source

Originally Posted by MarkoD

Just put a new bag in yesterday

[MarkoD]

Originally Posted by daniella3d

No I mean like dosing vodka or other carbon source

nope not at all