Aquascape Ecoblast Granular Algaecide For Pond, Waterfall, And Stream Features, 7 Pounds | 29313

good product.

It does work as described, but don't get carried away. I only treat a quarter of my pond at a time so that I don't hurt my fish. It won't remove all of the algae from the rocks if it's heavy growth, but you can retreat as needed. There are warnings on the container about being very corrosive, so where your gloves and glasses to be safe. A dash of this stuff in your eyes would be very bad. Just use as directed and you'll be fine. I have 7 butterfly koi and 8 fantail goldfish, and they did just fine. Highly recommend you run a bubbler/aerator for a day or two to prevent hurting your fish. Better safe than sorry.

clear out the algae in our koi pon

Turned off the pump, sprinkled on the rocks, turned water back on. Amazing! The water turned brown and muddy looking but the next day it was clear. A week later I noticed some algae starting to come back. Repeated the process and BAM it’s clear again. It’s been about 6 weeks since the second treatment and no algae has returned. I still have enough of this stuff for at least 2-4 more treatments when needed. Definitely recommended.

The Aquascape EcoBlast Granular Algaecide did absolutely nothing to my algae in my pond. I put it onto the algae as instructed and it did not change it at all.