Aquascape 29311 EcoBlast Pond Algaecide (Granular), 8.8 Ounces, White

I have a large backyard koi pond that I built 16 years ago. I've tried a lot of algae products over the years. I was turned onto this one by a local pond shop. In the early Spring, I start getting a lot of string algae on my waterfall. It's a real pain to get it under control. With this, I simply shut down the waterfall, sprinkle some of this on the waterfall and let it sit while I clean the filter and pond. By the time I am done, the string algae on the waterfall is mostly dissolved. I turn the waterfall back on, the foamy residue goes into the pond (and treats the water for future algae), and a quick spray with the hose brings my waterfall back to its natural rock look. It's effortless algae removal at its best.** Be aware that you follow the safety steps listed on the container **I always have a container of this in my pond supplies. It works great and I've never had an issue using it with my plants or fish.

I have a beautiful water feature in my yard but having difficulty keeping the rocks clean despite whatever I do ! Ecoblast was suggested by the company that maintains my water feature and I am thrilled!!! I have recommended it to my neighbor who is also pleased. Easy to use !

It needs to be applied very frequently to be effective. During this hot summer weather algae is growing & recurring too quickly. I first sit down my water feature & the blast off as much as I can w a hose. Then I apply the product all over and let it sit for sev hrs before staring the water flowing again. I was in hopes that a weekly application would be enough but unfortunately not.

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 😩

Turn off water feature...sprinkle on...let it sit for a minute...turn everything back on. Algae goes away