This light, much like many other eBay specials, uses poor marketing tactics to sell you a low quality product. The COBS are (probably) capable of 400W, but are only run at 200w. It's a 200w light. Might do better than a 150w hps, who knows.A 400W light that draws 200W? Light, meet bin. Stick with your HPS.
Either way, it's marketing BS.from what ive seen the cobs are not capable of 400W, they actually run them near their absolute limit. the 400w is "hps replacement' marketing nonsense
LMAO!keep it 18" from the canopy until one side burns out then lower it a little