Sorry RastaKaza but you need to be a little more flexable in your thinking dude.

I use only Mylar 2 mil my self and hereā??s why.

One standard HPS bulb puts out 140,000 Lumens. If White paint reflects 86% light for most grows you only end up with 120,400 lumens reflected. Sidelight is as important as top light but all to much people forget it all together (unless it's SOG). You lose 19,600 lumens that is absorbed by the paint.

With Mylar you reflect back 98% of the light that hits it. So the same 140,000 lumens HPS light as before you only lose 2800 lumens so you get 137,200 lumens reflecting back. Thatā??s like adding a 150w HPS light for free. If you have more lights like I do then it ads up even more. With 6 1000 watt HPS light and Mylar you get another 100,800 lumens of light just for using Mylar. Thatā??s like the 7th light of 1000 watts is free.

Thatā??s why you should use Mylar Itā??s all in the math.

As for refelectors................

If you have an air cooled hood with glass there gerrrrrrreat.
If you don't then you are refelcting heat down on your plants almost as much as the light refelection and heat is bad (most of the time)