http://www.walmart.com/ip/The-Original-Space-Brand-Emergency-Blanket-Silver/15935551
A girl from a cichlid group I am in tested this on a tank with just water (no livestock). She wrapped it around the tank and it held the temp in the tank over night. Great idea for when power goes out! (for the temp anyways)
Great idea Karen (or friend of Karen)! Not a bad idea to keep a few of these in your emergency stash.
especially for the price!
I wonder if those things ever works on fish tanks. I know it works on human. Works really nice out in the field, in cold dark nights.
Space blanket reflect heat back towards their source regardless of the source given the heat that is emitted is within the reflective bandwidth of the material (ie. near-mid IR).
That’s why we stay warm.