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Make sure water is safe for your dog to play in with this quick and easy blue-green algae test

Know if a pond is safe for swimming in just 10 minutes.
By StackCommerce  on 
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Make sure water is safe for your dog to play in with this quick and easy blue-green algae test
Keep you and your pup safe. Credit: 5strands

TL;DR: Swim with more peace of a mind thanks to the 5Strands BlueGreen Algae Test, on sale for just $31.99 — an 8% discount — as of Sept. 24. The company claims its test can detect these toxic algae with 99% accuracy.


To swim or not to swim — that’s the question on everyone’s minds as the wrath of blue-green algae (a.k.a. pond scum) is at it again. For the last few years, the toxic algae showing up in bodies of water around the country has threatened the health of both people and dogs that come in contact with it. It’s been linked to higher risks of sickness (or even death) in dogs compared to humans, likely because they tend to swallow more water while swimming or playing.

Sometimes you can recognize this icky greenish sludge right away, but often it’s visibly undetectable. The only way to know for sure if a body of water is safe for you and your pets is to test it. And to do that, you’ll need a test like this blue-green algae test from 5Strands.

Brought to you by the same folks who make the food and environmental intolerance test for dogs, the blue-green algae test is quick and easy to perform. It uses a technique based on one of the most recent and breakthrough developments in hepatotoxin detection, which allows it to detect 11 commonly occurring hepatotoxins in a single test. It’s even capable of detecting levels below 0.1 microgram per liter. So, if there are blue-green algae afloat, it will detect it.

All you have to do is collect a water sample and wait about 10 minutes. The results immediately show you the current state of the tested water body, with positive or negative readings via a fluorometry-based visual guide. It will also show you the concentration of detected cyanotoxins. Two lines mean blue-green algae toxins were detected, while one line means you’re safe to play. The company claims that the results are 99 percent accurate. (Which is not 100 percent, but could be helpful.)

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Keep your dog (and yourself) healthy and active for years to come by avoiding toxic algae. Snag the 5Strands BlueGreen Test on sale for $31.99 (regularly $35) for a limited time.

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Bethany Allard
Shopping Reporter

Bethany Allard is a Los Angeles-based shopping reporter at Mashable covering beauty tech, dating, sex and relationships, and headphones. That basically means she puts her hair through a lot, scrolls through a lot of dating apps, and rotates through a lot of different headphones. In addition to testing out and rounding up the best products, she also covers deals for Mashable, paying an especially obsessive amount of attention to Apple deals and prices. That knowledge comes in handy when she's covering shopping holidays like Prime Day and Black Friday, which she's now done for three years at Mashable.

She graduated from New York University with a B.A. in Journalism and English Literature. You can follow her on X @betallard and reach her by email at [email protected]. In her free time, you'll find her playing her Switch, hanging with her cat Mila, or cooking something new in her kitchen.


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