Those rings are cool Jim! Any idea on where you picked them up and the cost?

I've been running tanks dark after 10 pm on the SPS tank once the LEDs go out. With three flow pumps and three LED tubes, there's enough stuff under the hood... no rooom for moons.

The 93 cube runs a single Kessel 360 with their controller, and it ramps down to the lowest level (7% i think) and eventually to dark.

Something like these rings might be cool.