I've always had a muddy pond, about 12' of visability. My ponds about an acre or less but Ive always went off of an acre measurement. Ive played with the alum before and had ok results then after reading I discovered that my mixing tecnique needed to be better so 2 days we mixed the 300lbs alum in big barrels with pond water and sprayed it into the pond followed immediatly with 150lbs of hyd lime. The visability went from 12' to 24' in about an hour and the next morning the visability was 10 FEET !!!! The water was a beautiful Caribbean blue-ish green. The problem is it killed 37 of my jumbo trout and all my whitefish, no sign of bass or bluegil death. It was mind blowing to see that water change, now the wife knows what happend to the swing set(fish cover)....I know that I lost the trout cuz of the rappid PH change, should have I added the hyd-lime first? Or next time I could mix the two together and check the PH of the solution before I spray........I hate losing fish

Wow, Dr. Don! That is a radical change for sure. I don't know much about that sort of stuff at this point, but it seems almost obvious that it was just too much, too quickly. From the reading I've done here, slow and easy seems the best approach. Kind of like adding liquid ingredients when you're cooking - you can always add more, but you can't easily take them out once they're in the mix. I can't offer you any insight on how to mix those two chemicals, or if you even should, but certainly it seems that biting it off in smaller doses would be key and doing regular monitoring of your water parameters as you go would be essential. The good news is that your BG and LMB survived and your trout probably wouldn't have lasted much longer anyway as summer bears down on us. Now just don't hog wild on adding fertilizer to get a bloom going again and end up back at 12" of vis!