RDY-B. Sorry. Some confusion here, probably on my part about the use of Fumagilan-B.
The ratio is 2:1 sugar syrup mixture.
In the fall feeding: I will quote from the instructions given, if there are typos, please pardon :):
"Description: Fumagilan-B is a water soluable preparation containing the antibiotic Bicyclohexylammonium Fumagillin, equivalent to 21 mg Fumagillin base per gram of powder.
Fumagilin-B has a high specific action against Nosema apis, a microsopic, single-celled parasite which causes Nosema disease in honeybees. It acts on the multiplying, disease producing parasite in the gut and is not effective against the spores. To eradicate the continuing supply of parasites, Fumaglin-B must be provided over a period of several weeks.
DIRECTIONS: Medicated syrup is best prepared at a concentration of 25 mg Fumagillan base per lite of syrup, usually a 2:1 syrup (two parts of sugar to one part of water). Fumagilin-B may be dissolved in water or syrup at room temperature. For best results, heat the required amount of water to 35-50 degrees Celsius, then remove the heat source and add the Fumagilan-B and the sugar in that order
The prepare this concentration of medicated syrup, use the following chart:
165 ltr water 330 kg sugar 380 ltre syrup 454 g fumagilan-b
35 lt water 69 kg sugar 80 ltre syrup 96 g fumagilan-b
8.7 lt water 17 kg sugar 20 ltre syrup 24 g fumagilan-b
1.8 lt water 3.8 kg sugar 4 ltre syrup 5 g fumagilan-b (this is what I use for each of my own colonies)
Good agitation is essential to assure uniform distribution of the medicament
For the protection of wintering colonies, medicated syrup is best fed in the fall, if it is fed once per year. There may be advantages to feeding medicated syrup in the fall and in the spring.
DOSAGE. All treatment. After all honey supers have been removed, feed medicated syrup at the following rate:
7-8 litres for each 2 chamber colony (approx 30,000 bees)
4 litres for each 1 chamber colony (approximately 18,000 bees)
3 litres for each 5 frame colony (approximately 12,000 bees)
Feed additional unmedicated syrup to desired colony weight for wintering.
Whew, that was alot of typing, the instructions are probably written in a 9 font!!!!!
I really hope that I have cleared up a little bit of confusion. Have this wonderful day in the palm of your hands!!! Good health. Cindi