I love my nanoboxes. I did burn down my 20L with it though. They can be intense. I run a quad over a 20long. About 30% max output 2x blues vs. White. And a tide plus m over a nuvo 8 46% blues vs 23% whites. I'd only up a couple percent every couple weeks. My quad had everything looking awesome 5% weekly... until 1 week it burned everything down....now I'm back at 30% and ramping extremely slowly. So corals came backs... others are gone. Be careful