the blue spot has quite a range, and far enough south, that the habitat would never ice over… so the actual temperatures of my tank will range from summer in the shade average temps of somewhere in the 80’s, to winter temps being whatever I set the heaters at ( thinking around 60 degrees )
the foam box, will protect the tank during the extreme winter months, and will stop the use of the main viewing lights, however the 2 plant lights I normally use for sun rise and sun set, and shine through the tank back ground, consist of 2 - 18 inch LED strips per light, so even during the dead of winter, there will still be light cycles inside the foam box, just no direct overhead lighting…
so I’m thinking I can keep the tank warm enough, and light enough, for the plants and fish to over winter… it’s unlikely the fish will hibernate, so I’ll reduce feeding, but will have to incorporate an opening door to the corners of the tank top, through the foam, to slip a little food in the tank…
they are predicting one of the warmest winters on record this year, so this will allow me some fudge room, to get the bugs out of my system for the winter…