Hello folks, I try and keep my house quite warm, however, I have a glass tank and know it bleeds heat. I cover half the top with plexiglass and a blanket to insulate.

How may I cover maybe 3 walls with an insulating material (foam maybe) to ensure heat remains stable.

*cold snap in WA, tank still reads close 88 hot side, but I worry that cold side drops so much.

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