Copper Sulfate Crystals-10lb Bag (FINE Crystals)

I’ve used this copper sulfate two years to kill and prevent algae out of my pond without killing the fish. I’ve learned it doesn’t work if the water is colder than 70 degrees. I add blue dye in the winter to keep the sunlight from making the algae grow as much. The dye doesn’t work as well in the bright summer days, so I use the copper sulfate about once every other week in the summer.

great product, is exactly as described, well packaged, arrived quickly.

Fights foot / hoof infections in the barn. Like the finer crystals that what is found locally.

I switched over to copper sulfate crystals this year and found that they do a great job of keeping the pool algae free. It is easy to use and you just dissolve it in a 5 gallon bucket and then pour it around the pool. After brushing the sides of my pool, and running the filter overnight the pool looked amazing. This stuff is very effective at algae control and the small crystals make it easy to dissolve in the pool water. For root control we found that this did do a good job but after reading of the potential hazards if it is ingested we opted not to put large quantities of down as we didn't want us or others to get sick if it got into the ground water.

Good buy for septic root killer.

We have been battling bamboo that the neighbors planted next to our fence. It has been an ongoing struggle for literally years trying to keep it at bay. We live in the south so the dirt is hard clay, and nearly impossible to dig up. We were told to try this so we did, and it seems to be doing the trick. We are using it in addition to adding a bamboo shield along the fence line (after digging up what we could), but needed something to kill the bamboo between the shield and the fence. This was easy to dissolve in hot water. Be sure to use gloves, a mask and eye protection to be safe when using it.

This stuff really works, I scattered in our weedy pond and within days the aquatic weeds all died where it was placed. I did not see any dead wild life (frogs, fish, crawfish, etc....) I will definitely purchase again

I use this quality product in my pool. It maintains the water's color and quality at a good value.

I am using this product to reduce roots in my septic tank. The parcel arrives a week earlier than promised, and in great condition - bag was well packed, no punctures or moisture issues. I will order this again when I'm ready for a refill.

Does what its supposed to!

Great product for garden fertilizer. Fast shipping and good price.

Ok

Good service price is rite did the job.