Brown roots from nutes

Hi! I have not used floralicious but it seems to have seaweed in it and that is dark brown when made to liquid form, so it might be normal reaction from using the product. Also seaweed is good food for many bacteria so if you happen to have good bioponic system going the "good" bacteria might also form brown layer around roots. I'm using great white from Plant succes and it has beneficial bacteria and mycorhizzae to boost plant growth and those will stain your roots brown, but it is normal and nothing to worry about. So if your plants are going strong don't mind the brown