What kind of camera do you have?

I looked at your latest log and the pics look pretty good to me (i'm no pro...just a photo hobbyist).

Do you know if your camera has a custom white balance feature? I apologize if you know this and are doing it already...but... put your camera on "auto white balance" then go into your grow area and put a piece of white printer paper under the HPS light. Take a close up photo of the paper. It should look yellow/orange/how you expect it to look. Then, set that picture to be used as the custom white balance profile. It should fix the color quite a bit. Check your camera's manual as i'm not sure your model or how your camera does it.

hopefully i'm not spitting info you already know or don't care about.

skeet.