I would say I have very little Cal/Carb coming in from runoff, but, it's been a year since I last limed the pond and it's maintained the same Alk level over that period, even after having overflowed multiple times.

The plan is to add another 500# directly to the pond, and 50# of pelletized lime in the inflow ditch from my neighbors property so any future influx of new water coming from there will be picking up some lime on it's way to the pond.

We've had 16" of rain YTD, but the dry season is gonna be here soon.

.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!!