CGI... I run a 1K,too... But I have the heat issue at bay.. I don't think he mentioned,using an enclosed fixture. Mine is.. LxWxH,6x5x4. I do have a dimmable ballast too.. That helps later on. I run it 1k, 90 percent of the time. That stretch gets them close to the hood. Being able to control that part of the grow,is workin; for me.. I got an Indica dominate strain,too! Short in stature... Till I let them get big and outgrow the space... Just did that! Tryin' to figure out what I'm gonna do.. All the RESPECT in tha world to ya,CGI !

Ga.