I left mine in the center of my light set in the hopes that it might provides some small contribution to the overall spectrum of light available. Can't hurt and as small as my light setup is electric is not an issue.Wow! You guys are great! Thank you for all the info.
After reading a lot and seeing your take on it BigSmo, I think I may leave the 300 intact and build something from cobkits.com.
I have a 2x4x5 tent. I'm thinking about getting the HLG-185 driver with 3 CLU048-1818 3500k cobs. I would get 3 heatsinks and hang them individually.
Any thoughts would be great!

) Is one of thew most helpful people on the forum! He's always willing to jump right in and help! I learn something new from him all the time. Great to have someone with his experience on the team!