Go to your local pizza joint and ask for the glass gallon jars. I have two places that call me about every two weeks when they have a box of four for me all washed and every thing for free
. Olives and peppers come in them. I punch two 1/16 inch holes in them and set them right on top of the hives inter cover hole then place an empty deep around them with the outer cover on top.
I also use self modified frame feeders, I installed floats cut from a short scrap chunks of 2x4 then drilled 3/8 inch holes in the floats also place blocks across the top in two places to stop the bulging, they work great, but I only have two of them. I have heard all the yelling about them taking up room in the hive. Read above I use an empty deep to surround my pickle jars
so whats the beef there. I can place at least 6 in a deep I think an am thinking of ordering a bunch of them just to place in a deep above the girls for warm winter days.