if you look at the tank on the right of my signature you will see that one also has black so this is my second tank with black aragonite , i wasnt aware of any negatives regarding it , please inform me ? this is year 3 of using it and i have had zero issues with it , it looks super sexy specially under LED , it doesn't show dirt like white sand does , its coarse and heavy enough not to blow around and my tube nennies,sand sifters and star fish dont have any issues with it either
Most of the comments regarding black substrate related to aspects of cleanliness, some residual magnetism and the fact that the substrate is not true aragonite but a mixture of volcanic rock and aragonite. However, there are many different opinions out there. I think it looks great in your DT with LED lights, so I guess it's pretty much a case of personal preference.
Was just keen to get some feedback from reefers who have used/are using black substrate.