I advise against the emergency blankets. I also thought that was a great idea at one point. Only not for the buckets. I used it for the walls of my inside grow area. I figured, "Why pay 20 times more for the mylar at the hydro store than the $.99 emergency blanket from Wal-Mart?" Well, because the emergency blankets lose their silver coating easily. I got mine wet from misting to maintain humidity. The silver stuff came off everywhere it got wet after a short time. I used RO water, so it's slightly acidic. Just like rain water. Maybe that was why. Anyway, I ended up with translucent sheets of thin plastic. I guess there is a reason that mylar for hydro grow rooms is much thicker and unbelievably expensive. Then again, maybe that stuff is just as worthless. I'll never know as I won't use the stuff again for anything but what it is intended for.
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