Snrub - Good report. What brand of black dye do you use? Do you see black as having benefits compared to blue? My understanding is most black is made with blue, yellow, and red.
I thought I had replied to this but see I had not.
I started with Black Dyemond. Then when I needed more ordered from Rain Biologics. You can do a Google search and find both.
I saw no difference in the performance of the two.
I only used black because my wife and I did not think the blue turned the water color to a shade that went with our decor'.
