Get Rid Of String Algae For Good!
UV Lights Don’t Work on String Algae. Nualgi does!
UV clarifiers only kill algae that passes through the bulb. Since string algae also known as “blanket weed” is attached to surfaces, it never enters the filter.


The natural way to get a beautifully clear and healthy pond.
Nualgi’s family of products work to create a safe, crystal-clear pond, naturally, so you can enjoy your outdoor oasis with less work.
Eliminate the use of harmful algaecides, expensive UV filters and spot-treating. Nualgi products are 100% safe for the environment and all aquatic life including plants and pets.
How to get rid of string algae for good!
With a little patience and the right combination of Nualgi products, you can enjoy crystal clear, algea free pond water, naturally.
Get Crystal Clear Water, Naturally
Unleash the power of nature!

No more harmful algaecides.
Instead of killing algae, Nualgi promotes the growth of diatoms - Mother Nature’s favorite microscopic cleaners - to recalibrate your pond chemistry & improve the health of the entire ecosystem.

Say goodbye to expensive UV fIlters.
Man-made pond chemicals & UV sterilizers create a dependency that actually weakens your pond biology & prevents natural water chemistry from balancing. For natural, safe & effective help with algae control and the production of beneficial, sludge-eating bacteria, include the all-natural Nualgi line-up in your pond.

Customer support you can trust.
We’ve helped thousands of pond lovers over the years achieve the crystal-clear, hassle-free pond of their dreams. When you’re stuck with a problem, we’re here to help with our award-winning troubleshooting service.
Don't just take our word for it...
