Thanks for the replies, Lee I hope your right!
Kelly, controling the bloom is what I have been trying to do for 2 years. To make sure you understand, this pond has never been fertilized and has had an air pump going almost non stop since 2002. The heavy bloom comes and goes and I have seen this green to brown situation before. As I said a couple posts back, the brown color is gone now. The quart sample I took this morning has a Slightly green tint too it but is mostly just cloudy (you cant see thru it)
The only other thing I did was last year. I put in 3 gallons of somthing from TSC for algea control, dont remember what it was called.
So you dont think the low visibility is the problem with catching BG and LMBs? Do you think they are already gone and just sunk to the bottom? Anything else I can do?

Thanks for the help