Bob, good recipe in your blog! I didn't realise that we can use human vitamins on our fish! Checked the die-off again before sundown and from the marks on a few of the 10 dead and dying BG, and too, watching the aggressive nature of the Hooded Merganzers, I am going with stress and actual wounds killing them at this time. (I watched a Merganzer catch and swallow a BG that was 3 times as big as it's own head!) It is like I have my own Cormerans (sp?)... As they just migrated in, I will help them fly on down south tomorrow...