Crystal Blue Copper Sulfate Algaecide - Granular Aquatic Grade Copper Sulfate for Pond Algae Control - 5 Pounds

I have a 400 gallon pond with a waterfall and I always had an algae issue until I bought this. I know I poured a little too much in but I was thinking "what the heck". The pond was cloudy for a few days and then it cleared the water up and now it looks fantastic! Crystal clear. What a great product ! I would highly recommend this to anyone who has a pond with an algae problem !!!

Worked great for my cloudy pool. Cleared it up in one day. It’s crystal clear now. Highly recommended

I have a small garden pond (approximately. 450 gals.) with some lilies. No Fish. I have constantly battled withalgae and green water every summer. I have tried many different products without success. This is the ONLYproduct that has worked for me. I used 1 Tablespoon diluted in 16 oz. of water. It does not seem to be harmfulto the lilies at this time. I wish I had known about this product when I built my pond several years ago.

Good stuff but hard to determine how much to use. Sprinkling uses too much but you can dissolve in water and spray

Works well, fairly quickly.

Worked great. We ended up getting an algae bloom in a couple ponds that unfortunately killed some of our cattle. Moved the cows to a different field for a week while we used this. Worked perfectly to kill off the cyanobacteria bloom. Now the ponds are safe for the cows again.

Works well, but doesn’t touch lily pads. I’ll keep shopping

works great to reduce or eliminate jiggers