hey guys, im on day 8 of carbon dosing .07 ml. i have notice some slight changes the nitrates went down a tad and water clarity, howver i have not noticed a big change is skimmate, its green not brown. is it too soon to tell? i am running gfo, its been in for almost a month so i figured it wasnt as potent to imbalance the po3. i know that carbon dosing mostly tackles nitrate so i do not think that is it. ive read a lot of posts where people were pulling brown sludge just days after their first dose. i really want my skimmer to pull out some nasty stuff the efficency is half the reason i chose this route. please chime in if you have first hand knowlege.