Looks nice, just starting a one plant run in 4x4 under 600 true watts. Hope ahe can fill my tent like yours is already. Had problems watering full tent. Just got too tight and hand water. Again, looks awesome, good luck.
after reading all the information you guys have provided i have decided to buy 2of these 250watt lights. i think 500 watts is a good compromise for the 4x4, i would like 600 watts like a couple here have suggested and shown but i couldnt find any at the price range i wanted it seems the prices jump when you hit that wattage (high demand commodity i suppose)
Amazon.com : Bloom Plus LED Grow Lights BP2500 Use with Upgraded SMD LEDs(Includes IR) and Dimmable Full Spectrum Plant Grow Lights for Indoor Plants Seeding Veg and Bloom : Garden & Outdoor