The Pond Guy UltraUV 18 Watt Pond Water Clarifier and Fish-Safe Algae Treatment for Outdoor Ponds
The Pond Guy UltraUV EPA-Registered UV Pond Water Clarifier & Fish-Safe Algae Treatment, 18 Watt
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The Pond Guy UltraUV EPA-Registered UV Pond Water Clarifier & Fish-Safe Algae Treatment, 18 Watt

|16 ratings
The Pond Guy UltraUV EPA-Registered UV Pond Water Clarifier & Fish-Safe Algae Treatment, 18 WattThe Pond Guy UltraUV Pond Clarifier 18 Watt UltraUVThe Pond Guy UltraUV Pond Clarifier 36 Watt UltraUVPond Guy UltraUV Ultraviolet Pond Water Clarifier EPA Registered UV Light Planktonic Algae Green Water UVC Treatment Chemicals Plant Koi Fish Duck TuThe Pond Guy UltraUV Pond Clarifier 55 Watt UltraUV
Size18 Watt UltraUV

Key item features

  • ‌Clarifies pond water throughout the entire season
  • Eliminates green water caused by planktonic algae
  • Powerful UV light destroys algae at the cellular level
  • Vortex chamber ensures maximum UV exposure
  • Get visible results and lasting clarity in as little as 48 hours
  • Ideal for ponds with full sun exposure and excessive debris
  • Enhances the efficiency of mechanical & biological filtration
  • Durable and efficient design ensures worry-free operation
  • Pairs with properly sized pond pumps suited for your pond
  • The EPA-registered choice for safe algae control in water gardens

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Customer ratings & reviews

4.3 out of 5 stars
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16 ratings15 reviews
How item rating is calculated
  1. 5 stars81% (13)
  2. 4 stars0% (0)
  3. 3 stars0% (0)
  4. 2 stars6% (1)
  5. 1 star13% (2)
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Showing 1-3 of 15 reviews

Aug 10, 2026
Reviewer name: Penny
Item details
Size: 13 Watt UltraUV
Sold and shipped byThe Pond Guy
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

This is our second one. First one worked great and lasted a long time. Hopefully this one will too. No issues with the first one. Helped clear up the water.

Helpful?6NPFIIFUD1RC766105541
Oct 29, 2025
Reviewer name: Angela W.
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

Algae Pea Soup No More

Algae completely gone in 5 days! I can see my fish! I am thrilled.

Review from The Pond Guy
Helpful?6NPFIIFUD1RC766105541
Jun 23, 2025
Reviewer name: Thomas B.
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

Our pond is 12 x

Our pond is 12 x 6 x 2 and in full sun. We have the Simply Clear Filtration system with the 7watt UV light and the SolidFlo 1250 pump. The pump and filter do a great job, but the 7 watt UV does not keep up with the algae and the water was constantly green no matter how often we cleaned the filter. We added the 18 watt UV clarifier and within three days the water was clear. The 18 watt clarifier really does the job.

Review from The Pond Guy
Helpful?6NPFIIFUD1RC766105541
Current price is $179.99
Price when purchased online
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  • Free 30-day returns

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Sold and shipped by The Pond GuyPro Seller
4.49685534591195 out of 5 stars
4.49685534591195 stars out of 5, based on 159 seller reviews(4.5)
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