In running 5V 30/m which are individually controllable. Looks great in 1" ID sure seeder tube. I wouldn't go any more coarse than that. If I was using fatter tube I'd be looking at the 60/m individual 5V ones, to give the higher density.FWIW....Several years ago when I tested WS2811 30 leds/m in 2" HDPE I thought it looked too choppy when an effect was moving across the arch so I went with 60 leds/m. It sounds like those GS8208's are individually controllable so 30/m individual should be fairly close to 60/m in groups of 3.