It only reflects the available light. In your case, the blue light reflected is coming from the HPS lights themselves! That may sound odd but HPS does emit enough blue spectrum that you will be able to notice that the bags are indeed blue under the lights, but it should look like more of a navy blue since really there's not a lot of the blue light there to reflect to begin with. Considering that other grow bags are black, and reflect NO light, you're already ahead of the game.
stinkyattic Reviewed by stinkyattic on . Grow Bags I recently started using these grow bags called Oxygen Power Bags. The question I have ,may be crazy? But,hey! I'm stumpped.The bags are a dull but glossy blue.The have the room reflecting blue,all around from the mylar.I am using a 600 watt HPS.Will this have too much blue in my spectrum for flowering? Will the blue keep the gurls flowering properly?These may not be the ticket for flowering? Just want some input on my situation.They are so easy to work with,but the blue issue has me concerned. Rating: 5