We knew this winter would be a learning experiment and we're definitely learning a lot! Made it through last nights temps of 5 degrees - got down to 16 in the greenhouse but other than a couple of basil plants that bit the dust everything else came through with flying colors. We cover the the rafts and media beds with row cover material at night which seems to help immensely. Yesterday we hustled and insulated one fish tank with foil bubble insulation and installed 3 - 300 watt heaters ----…