i can get high calcium hydrated lime for $5.75 for 50 lbs. i have pond just shy of acre. i put in 25 lbs when theres alot of that carpet crap growing or any type of algea , it kills it dead. through the coarse of the year , i see it starting , i put a little to kill it. one other thing i noticed is if you stir the soil by the bank it kills it to. so i guess the lime is still there. so i have been using even less now. i have the only pond in miles with nothing floating on the water. i spoke with 2 chemical engineers and they both told me that using 100 lbs over the year will be no problem. never use too much at one time , because it changes the PH fast. both said never use copper based products. i'd like to read your thoughts on that application. thank you
