600 watt HID cooltube question

Urbz

Well-Known Member
I have a Cotton Candy that has stretched to 40" dirt to tip. It is now 8" from my light (600 watt HPS in cooltube) and I only have 8 inches of clearance left in my tent. Heat is NOT an issue, my concern now is bleaching. So that leads to my question. What distance from an HID risks bleaching? Is 8 inches from the light risking it?
 
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