Radions, loved them had great coral growth and I loved simplicity of adjustments. Pricey but never had a problem with them, used light hanging kit and it was a sleek look that worked. I had a 240 rupture on me last year and I ended up taking a sanity break! Sold everything and stopped reefing. It lasted a year Im back and currently refurbishing a 80 gal half round, stoked : ) Good reefing, nice tank.