Quote Originally Posted by HARDDON
The math is meaningless.

Even Mylar @ AN 'ALLEDGED' 98% relfective rate is uselss if its not properly laid flat against the surfaces. It will have dark spots that eat light.

White plastic is great as well as long as the surface is flat you will get up to 86% reflection.

Personally I prefer white as it causes a 'diffusion' of light as opposed to a direct reflection like you get with Mylar.

Your calculations need to contain footnotes that all mathematical equations are based upon proper setup, install and relative FLAT surfacing of your materials.

Mylar may be 98% reflective, but NOT if improperly hung. Same with white.

I agree wholeheartedly. sometimes people get so caught up on some of the smallest nuances that it sometimes too funny. Unless someone is taking calculations of all of the variables present i.e room shape, properties of reflective material, various light positions, phenotype characteristics of the strain etc then some of these small minute differences are all a waste in the avg grow room.

People should just put emphesis on the basics i.e proper lighting, good room setup and good strains and all will be well. I mean really...has anyone ever done a controlled study to see the difference between white paint, mylar or any other refelctive material? I know we can calculate the theoretical increases in light output, but who's to say that other reflective characteristics are not changed from one medium to another?!

I just think people sometimes look at the wrong places when something is not what they expect instead of looking at the basics since the more intricate/small things tend to not have such a drastic impact as the basics.