400watts

Checking the Samsung calculator on the 3000k. Running at 1.4A max and total wattage of 400W. All numbers the exact same to check what has best lumens and efficiency ratios. Average new grower based on 400W setup. All tests are in series. Till maxed out at 400W. Here is the list from best to...

hello, like the title says!! I would like to build a 400w LED that’s dimmable, preferably 4 separate COBS. What would be best to use and why?

I have this Digital Electronic Ballast For 400w HPS and MH lamps. I can't seem to find any pictures of it online or even what the brand is. I even searched the model number only to come up with slightly different versions of it. I have a couple questions if anyone on here is familiar with them I...