Peter Borst: Three different foundations were used, 640, 770, and 900 cells/ sq. dm. Reply: Seeing how this was done back in '92 when we were into the 900 series which Dadant produced and we didn't like the fudge (stretch) factor in assemblylining production, and also were making own equivalent which was 5.0mm to 5.1mm; we had to retool in year 8, to fine tool better for even more varroa control and secondary disease control, which meant going down smaller to 4.9mm top tolerance to gain that control,... thus the 900 size is considered a first regression step down. All this shows is more work was needed to proceed to gain control, which we did. It also showed that you cannot put hives tested side by side or nearby due to drift and evening out of mites to see what has to be done. Learned a lot by it, but maybe not what others saw, so we could continue forward in following our bees needs. You cannot draw a line at 5.0mm hard and fast for Nature doesn't work like that. You have to follow the bees' needs which we did. For until the bees get what they need there will be problems, and you will never arrive at a harmonious balanced end with all inhabitants in a hive at peace FWIW in co-existance. In the end, I think even man will work that way. Respectfully submitted, Dee A. Lusby Small Cell Commercial Beekeeper Moyza, Arizona http://groups.yahoo.com/group/organicbeekeepers/ ____________________________________________________________________________________ Sponsored Link Mortgage rates near 39yr lows. $420k for $1,399/mo. Calculate new payment! www.LowerMyBills.com/lre -- Visit www.honeybeeworld.com/bee-l for rules, FAQ and other info ---