Nualgi Ponds – 125ml

Rated 4.58 out of 5 based on 241 customer ratings
(242 customer reviews)


An innovative approach to improving pond balance, Nualgi Ponds is built on a nano silica base with our patented formula of 12 essential elements that safely help restore the natural balance, improve water quality and control nuisance algae.

Engineered specifically to benefit the health of your aquatic plants and fish, Nualgi Ponds is easy to use, efficient, and yields rapid results.

SKU: np125ml Category:
WHOLESALE DISCOUNT – buy a total of 12 bottles or more and receive Special Wholesale Pricing. To apply to the program and view pricing info, go sign-up for our Wholesale Pricing Program.


Bottle Size Gallons of Water Treated Cost to treat 5,000 Gallons
60 ml 60,000 $2.08
125 ml 125,000 $1.60
250 ml 250,000 $1.40
500 ml 500,000 $1.15
1 L 1,000,000 $0.97

When you supplement your regular maintenance with Nualgi Ponds, you will be able to:

  • WATCH YOUR POND FLOURISH – Nualgi Ponds will significantly improve water quality as well as the health of fish and plants. For many eutrophic ponds, results may be visible by afternoon on the first dose– starting with the bubbling up of oxygen, elimination of odor, and Blue Green Algae crashing and floating to the surface.
  • SEE MORE – By reducing nuisance algae growth, Nualgi Ponds improves water clarity and visibility to reveal more of the pond’s environment and its inhabitants.
  • FEED LESS – By restoring missing nutrients, Nualgi Ponds brings balance to the natural marine food chain from the bottom up by promoting the growth of diatoms and zooplakton – free food for your fish and shrimp!
  • SHOW IT OFF – Enjoy peace of mind knowing that your pond is healthy, clear, and odor-free.  Friends and guests will be impressed, and we won’t tell them how easy it was to restore the natural beauty of your pond.
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242 reviews for Nualgi Ponds – 125ml

  1. Rated 5 out of 5

    Steven Yokum (verified owner)

    It took a month to see results. Which was stated as a possibility. During that time I did a lot of manual removal of the string algae. I probably scooped 5 pounds out of my pond. I’m not sure this would have been effective without doing that. At this point even the surface of my rocks are starting to clean up. So I’d say it works. I’m wondering if a little string algae may be good for the fish going into winter so today was my last treatment for 2017.I stopped using over the winter and the string algae exploded again. I started manually removing and using this again on my 1000 gallon pond this spring. Took another month, but once again it cleared the string algae out. I’d say manual removal is a must on the big strings

  2. Rated 5 out of 5

    John (verified owner)

    This stuff actually works. Not sure how, but I ,put in 2 mils for a week until algae was under control and now I use 1 mil per week for maintenance. The water is a lot clearer.

  3. Rated 4 out of 5

    Crystal Maddox (verified owner)

    This stuff really does remove algae from my pond!

  4. Rated 5 out of 5

    Katie And Gary (verified owner)

    Love this product … I’ve been using it for 3 years now and just wish they offered a larger size and brought their price down a bit. We have a 14,000 gallon Koi pond and a much larger natural pond in back that we cannot afford to properly treat. Sell me a gallon size and give me a break on the price please. I’m done with paying for products that do nothing and just take money out of my pocket.This stuff works.

  5. Rated 5 out of 5

    Trevorm (verified owner)

    This product worked as advertised. Excellent for my pond.

  6. Rated 5 out of 5

    Francs D. Irwin, R.N. (verified owner)

    Wow, we had emptied our pond and cleaned out the slug for years of accumulation. It was hot when we refilled it and within a couple of days we had really sick water, smelled, brackish, ugly. I put 1.5 cc’s in it daily for a few days and the water cleared, the smell was gone. Its now stable with putting 1.5 cc in once a week. Ready for fish now. Had lost our fish last winter. Some had been in this pond for 13 years. Nearly everyone in our area lost their fish last winter. The best product I’ve ever used for controlling algae and muck. The water lilies are thriving.

  7. Rated 5 out of 5

    Patricia (verified owner)

    Wow! This stuff really works??. I had been useing a UV light. That worked sorta, but made a lot of sludge on the bottom of my 6000 gallon pond ( a real pain to clean every 2 weeks). I started useing this product after I had cleaned the pond and it has been over 2 months and only a small amount of sludge. I could probably use a bio lift and that would clean uo the small amount that has accumulated. Make sure you turn off the UV light if you have one. This works!!!!

  8. Rated 5 out of 5

    Anthony Boccio (verified owner)

    This product is fantastic. If used properly, it works great. I used many other products before and NOTHING worked, this worked in about two weeks. My water is completely clear and pond is doing great. Great, great product.

  9. Rated 5 out of 5

    Cindy Patterson (verified owner)

    Best stuff ever.

  10. Rated 5 out of 5

    Morton Lin (verified owner)

    I have a water fountain with goldfish in it. I tried several products, and this one seem to work the best to control algae.

  11. Rated 5 out of 5

    Rosemarie Strum (verified owner)

    i didn’t think it would work as well as it does….my koi seem very happy and i can finally see them….

  12. Rated 5 out of 5

    Brian Black (verified owner)

    a new pond, several fish, new plants( plant fertilizer), this was a recipe for algae. I had always used barley straw along with a filter to keep my old smaller pond tolerable. I wanted better. Nualgi has kept my pond clear! my fish are happy and growing, so are the lillys and floating plants. Thank you

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