Typically, when restarting, you follow the same criteria as if it were a new system. 15 minutes the first day, 30 the second, an hour the third...and so on until you reach the full 24 hours.

When you first started, your pond hadn't had time to stratify, so it was the same top to bottom. Now you have fish, and their waste as well as other decomposing matter is accumulating on the bottom. Going to a straight 24 hours has mixed all those gases and your basically poisoning the fish. By starting gradually, you give those unwanted ingredients a chance to be expelled at the surface.

If you smell a strong odor down wind when the aeration is running, shut it off and back up to the last shortest run period, until you no longer smell it, then start build up again. You should be doubling these times until you reach 24.

.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!!