A Woody, What did you find out on the LMB with red upper lips? What can you tell me about your pond? Water source, age, what is your approx fish load, plants available, grass carp, chemical program? Pond surface picks up some wind, or is it very blocked.What can you tell me about your aeration system? diffusers are in what depth and are airstones for example,and the pump supplies what cfm?Not trying to over question but these are some of the items needed to answer your questions.Some of your answers may be in the post to Sarc.In the meantime turn the system on at least all night and post some facts on your situation and I'll will qualify some of your questions. Your questions are very good and it takes some information to answer you accurately. Even with all of the above information there will always be variables that we can discuss.Sorry no one directly answered your post from 2-15-05 Ted
