Thank you Carl, I have a couple of questions, how reliable is the ferricyanide test? and I notice you use more OA than normal, is there any reason for this? better keeping qualities?
I tried the EDTA trick as suggested by Kevin and still could not get it going. I use a combination hot plate stirrer so I dont think the temp and agitation are my problems.
I was confused since my first batch went without a hitch, must have been beguinners luck, but since you also experience this I guess is normal.