My PH was at 6 before adding lime ,,, It only came up .2 by adding 160 lbs of lime ,,, the pond is roughly 700 - 800,000 gallons ,,, I am not in any big rush to clear my pond up but I would like to gain some headway this year, As far as visibility goes ,,, You can only see a few inches before it turns to rust color.
That is 2 or 3 acre feet of water. If yo can, try to get a local co-op or feed mill to bringa couple tons of AG lime and spreadit in the pond with their truck. Ag lime can't raise the PH above 8.2. The rise occurs pretty slowly and will last for at least a few years.
