The root sytem of the plant must have sufficient room to grow, I doubt your bottles will be anywhere near big enough.
Potbound plants will die.
I have used envirolites with success and they are available in the correct spectrum.
Foil is bad for your plants and will brown any part of the plant that touches it.
A simple coat of white paint would be better if you can't afford mylar
You can box your plants but don't forget to ventilate (mould is nasty) and also provide crossflow air to strengthen stems.