Time will tell, John. I've shut it down yesterday due to multiple days of cold and rain. I hope someone with knowledge will weigh in.

The pond got another good flush on Saturday and is going out the pipe again today and will be again tomorrow. Youd think with over 60" of rain last year, I wouldn't have a nutrient issue. All the runoff comes off my neighbor's yard and he doesnt do anything but mow it. And it all gets filtered by thick grass and trees before it enters the pond.

.10 surface acre pond, 10.5 foot deep. SW LA. The epitome of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, Longear Sunfish, Gambusia,Mud Minnows, Crappie, and now shiners!!...I subscribe!!