NP PLus color

[VLJ]

Hi,
I've started to dose NP Plus on a new tank setup to keep up with low nutrients.
The contents of the bottle I've bought recently is brownish color. Previous bottles that I've used were clear color.
Has the recipe of NP Plus changed or the color change is due to the organics that went bad?
Is it ok to continue to dose is or should I stop.

Thanks!

 

[Hans-Werner]

Hi,

Can you give us the batch number? A phototgraph might also help.

I can't imagine a way the organics would develop a brownish color. So I would like to see what we are talking about.