Working with Zandor's input, and Karmaxul's... I'm thinking...

Ok, does ANYBODY have a cool to the touch cool tube? Or experience with such a setup?

I had 1st a 6", 90CFM fart fan, running one 400W MH.
Warm air out, hot (if touched) cool tube. Hot, right under the bulb... not "near" it.

2nd, I installed a 550CFM Dayton axial 10" fan... same 400W MH.
Too much air out to know if it's "warm" or not.
But cool tube? Same as 90CFM... hot right under the bulb, not in the areas sorrounding the bulb.

I'm just wondering, does anybody have a "cool to the touch" cool tube?