UFO was great but mine died after 6 months.
I clear out 1/2 of my refugium of chaeto once a week. About 24x12x12” area.
View attachment 21063 They are built identically to black boxes. They are all made in the same Chinese factories. If you trust a black box over your tank, then using one of these isn’t much different. Just like black boxes, these lights are not waterproof. Is any light really waterproof though?
With that said, I’ve been very happy with mine so far. Fills a large ziplock bag with chaeto 1-2 times a week.