Algae Off Granular Algaecide

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AlgaeOff granular algaecide is designed to remove string algae on contact.
Works great for waterfalls, pond-free or pondless systems, or fountains!
Use it during pond cleanings to remove excess algae on pond sides while the water is drained.
Adds oxygen to the water at the same time, so no need to worry about decaying algae removing oxygen from the water.
For ponds, we recommend using Remove Away Plus to keep string algae from coming back.
EPA registered
You can find the Safety Data Sheet here.

waterfall cleaned with algaeoff

I’ve been using algae off for years, it has always done a great job.

Not always effective

My case may be unique, but my waterfall/stream completely drains on the upper level but retains a couple of inches of water on the bottom level. So some algae has good contact and some doesn’t, so I never get all of the algae killed; it always grows right back even when I also treat with the liquid D-solv

Thanks for your feedback! AlgaeOff definitely needs contact with algae to work, so that makes sense that it doesn't work on the algae that's still covered in a bit of water.