I sent some pics, finally! So my most recent tests show FC: 16.5 CC: 0 pH: 7.2 TA: 80 CH: 310 CYA: 40. The last few days I have found random spots of algae. They are Very small and I can brush it off easily. So do I need to keep the FC up even though it holds overnight? I didn't know if you could see the roughness very well in my pics but I thought I'd see if you could tell what it is.