If its that green copper stuff it won't affect bees unless you spray it on them, but Linseed will last for years and its only like $20/gal and then just take a sponge and go through the inside a couple times. I also had pine boxes no painted or treated lasted 5-6 years.
Don't pressure treat it. Paint the outside and when it s dry dip it in linseed oil Tongue oil or hot parafine with little bee wax. I wouldn't say its bad to pressure treat it won't affect bees but we don't do it anymore.
Speaking of moisture in hives, We use cedar wood to make there beehives. The lids with ventilation have had more success than those without. Ceder absorbs water and keeps it dry unlike pine it gets all moldy and nasty.
Not all beekeepers want to feed there hives. If Beekeepers didn't feed there hives they would die. Last year the honey crop was so poor we barely got any honey and the 2 million acres of almonds would not be pollinated. Therefore, If you have honey for the bees that is good but is better to feed...
Not enough pollen. They have to feed there young. So what I do and most commercial beekeepers they put soy flower powder in a tub and let them collect it for a pollen substitution. Won't hurt the bees and won't fly and take the chicken feed.
Whats the color of the queen. If its light brown or golden that means the bees will all be Italian and be gentle. If the queen is black or black brown stripped they can be a mix and can be mean a lot of times. Don't check the hive to often because they will start to get cranky. Also put some...
Buy a nuc. In the spring time they will grow real fast and will produce honey that same year. Most beekeepers sell of their black disgusting frames. Buy new and you won't regret.
Take off as many boxes possible you don't need that much They wont be able to heat everything. Leave them food. They will form into one big ball really tightly.