Pond Boss Forums GENERAL QUESTIONS Muddy water change, dramatic!!!, in less than 24 hs

I see you are a diver. Have you been diving in this quarry since you removed the muck and starting the aeration? If the problem was caused by the wind kicking up the fine clay settled on the bottom you would have noticed the bottom sediments which are easily stirred up by a diver swimming just over the bottom. I can see wind action kicking up sediment in the shallows but in 17 meters of water I don't think so. Evan at the average depth of 7 meters it should have remained relatively calm.

Is it possible that the winds kicked up dust from the lands surrounding the quarry and deposited new silt into the water?

I would wait for input from someone with more first hand experience than me but if there is no flow into the quarry and no flow out, the level must be maintained by springs and if they do not flow out, in time, the dissolved solids will begin to get higher from evaporation so I would be wary of adding any salts (aluminum sulfate or lime) without some testing.