red slime is starting to over run my tank. i have tested my water and my phos 0,nitrites 0, nitrates 1. all my lights are new since march, i run a 180g with a 75g sump, i use a dart pump so i have a lot of flow plus i got 2 other pumps that range from 1200 to 2000gph for extra flow. i added gfo,carbon,and bio pellets to help with the issuw. i even changed my light timers so they go on later and turn off sooner, i even use ro/di water that tests at 0. i looks like its slowing down but its really hard to tell. what am i missing here that i cant get rid of this issue?


