EcoBlast Contact Granular Algaecide for Ponds, Waterfalls, Fountains, Streams, and Rocks, 7 lb / 3.2 kg, 29313

This is the best product I have ever used to remove algae from the rocks in my koi pond. I have tried so many different products and none of them have taken care of the problem. This product is very easy to use and works fantastic. I can now see the rocks in the pond and the waterfall is completely clear of algae.

I received this today and immediately sprinkled it in the basin of our waterfall and within a couple hours it was very clear. I'm sure by morning it will look even better. I will be buying this again as it is so much easier to use than the liquid. I don’t have to worry about splashing, and it is fine with the birds and the lizards.

Great product. Started working within 12 hours of application and by 36 hours about 95% of the Algae was gone

I’ve used a product before that was granular and it worked beautifully. I figured since this was granular that it would work just as well! Boy, was I wrong!I have a water feature that is not that large and this product is not strong enough to clear everything up!

I have to repeat use every 12 days on our rock, else algae and discolor returns. Wish it lasted longer.... it does clean off the funk but only for 10-12 days, til you need to go scrub the rock again 😩

Kills the algae at least for a while after one application

REVISED and UPDATED: Ater I had used the hand vaccuum to clean up what was on the rug, my husband read the warnings on the label. It said do not inhale--too late for me. I had to take off all my clothes because I had the granuales and powder on my shoes, my jeans and my shirt. I also had to remove the table cloth and place mats from our kitchen table. I have some burning in my mouth right now. My husband said his nose is buring. If this doesn't subside soon, I will have to go to urgent care. Someone needs to check and ensure that this product is safely packaged!The mailing package had quite a bit of loose product in it. The lid was off. I had to poor product from the package into the jar. I had product on the floor, on my jeans and on my hands. It would have been better if the lids had been checked to ensure they were fastened securely, taped down or placed in sealed bags. I am thankful that our cats did not get into this.

The algaecide powder is easy to measure using the enclosed scoop.The instructions offer complete details about the proper usage of algaecide.It's important to know the amount of water in your pond to estimate the amount of algaecide to use. It works quickly and causes no after-effects in the water.