I tested today, I'm still not overjoyed with the results. Am I trying to match the darkness of the color or the difference in color, ie: 1.5 and 2.0 are more violet than blue? I should ignore the edges of the sample color also as they fade into clear, right?
Maybe I'm trying to split hairs... I don't know.
75 gal heavily planted,50/50 flourite/gravel substrate, Pressurised CO2 with solenoid, ph controller, AB Reactor 1000, 330 watts 9325K GE PC lighting,Ehiem Liquidoser, 2-Filstar xp3 canisters.