Predrag,
>>Personally, I use upper entrances and the hives are without vents
on inner covers. Beekeepers that have vents, cover those with papers
or someting similar.
Please describe in more detail how you do this. Also, do you use top
insulation or wrap your hives?
Waldemar
-- Visit www.honeybeeworld.com/bee-l for rules, FAQ and other info ---