Pond Boss Forums INTRO Questions & Observations Red mouth

Not aerating in winter reduces or eliminates one of the chances of low water temperature being the problem The other possibility that lower than normal water temp being the cause is if the pond received windy conditions during cold subfreezing air temp. Windy conditions keeps freezing air temperatures and chilled water from freezing and thus this 'over' cooled water mixes deeper into the pond than the surface layer, thus this chills or 'super cools' the overall pond water lower than 39F. If that did not happen then the LMB are being stressed by some other feature during this past winter to cause the abnormal red tissues in the mouth.