I had my pond pretty dark blue to help with the FA this summer and it seemed to help a lot. Now it has been diluted with the rain and I can see bottom a good ways out. I like the idea of clearer water to let the HSB and SMB easier see and work on BG from the late summer hatch. Does the FA grow on bottom over the winter or would it be better to wait and add the dye right before the water warms in the spring?