ewest- 2-3 weeks prior to die-off-- BG and LMB became difficult to catch. Diffuser aerator was running 9 pm to 2 pm daily and surface aerators were running 4 am to 10 am daily. Plankton bloom on secchi disk was 12" to 13". 4-5 days of cloudy skies prior to die-off.

Now running diffuser aerator 24/7 and surface aerators 7 pm to 9 am daily. Hurricane Florence dumped 4 1/2 " rain this past weekend and pond secchi now reading 18". No further die-off and water now seems to be in good condition. No unusual activity at diffuser boils that I recall.

Thanks for your reply and dedication to the Pond Boss Forum.

Al Allison