Natural Pond Care Secrets Revealed

Use these 5 pro secrets to naturally balance your pond

Psst…Here’s the scoop on what most pond “Pros” won’t tell you…

Truth is, you do not need lots of fancy equipment or expensive filtration systems to keep your pond crystal clear and your fish and other critters thriving.

You can have the pond of your dreams by learning just a little bit about your pond’s water chemistry and the natural pond care alternatives you can use to replace those toxic algaecides or expensive UV sterilizers you might currently be using to maintain your pond.

To help you GO NATURAL, we went to our network of pond professionals and koi dealers to give us their best advice for people looking to pull the plug on their UV and quit their long time reliance on algaecide solutions.


Not all pond care methods are created equal. In fact, some are downright destructive!

It’s quite possible that your diligent pond care techniques may actually be harming your environment instead of helping.

So, let’s do a quick pulse check…

  • Are you struggling with pond maintenance way more than you expected?
  • Is crystal clear water more of an anomaly than the norm?
  • Do you find yourself wondering if the investment in electrical costs is worth it?
  • Has your UV light ever gone down and caused a toxic mess?
  • Do you think algaecides are not harming your local environment?

If you answered yes to any of the questions, you’re probably frustrated and hungry for a quick fix! Don’t worry, mastering the science and art of clear healthy water IS EASY!

Read on to learn how your investment of time and attention will pay off…

A well balanced pond starts with good husbandry and a little work! Learning how to carefully optimize the environment you are cultivating will set you up for long-term success.

It might actually be easier than you think… and we’re willing to bet that the solution you seek may only be a shift in your approach.

Quick question, are you using copper algaecides or UV lights to “control” algae?

It’s a pretty standard solution, many people try to remove algae from their ponds with algaecides and UV lights. Sure your water might look clear, but here’s the part of the story you’re not being told…

Secret 2:

You won’t see this in the sales ads, Copper algaecides & UV lights are quick-fix band aids and won’t provide lasting results.

These pond care solutions work at the superficial level, neither actually address water chemistry or the fundamental issues which lead to poor water quality. Both can actually harm your pond’s eco-system more than you might imagine.

Warning! Chemicals create a weak ecosystem… one that may be harming your fish!

Think about it this way… when you put bleach in your washing machine you get clean whites… add a tad too much and you can burn the material. Add just one drop in the wrong place and you can ruin a load of colors or, god-forbid, you get it in your eyes.

You wouldn’t take a bath in a tub of bleach right?

Why should your pond’s fish have to live in such harsh and unnatural conditions?

Feeling guilty? Have no fear, there IS a non-sterilizing light at the end of the tunnel! You CAN create a healthier eco-system for your pond’s inhabitants, NATURALLY…

Secret 3:

Don’t let anyone fool you, natural pond maintenance is a sure path to consistent, crystal clear water… and, it’s just not that hard to do. Boom.

Going natural IS a long term solution. It’s easy AND it works.

Think about it for a moment, nature knows, she’s been building ecosystems for all of time. The logic is simple. Healthy water systems have balance through a strong chemical makeup.

The stronger the body of water, the more balanced it is, the better able it is to fight off the things that pull it out of equilibrium. Man-made chemicals create a dependency that actually weakens the water system. When you “go natural” you work with the ecosystem to establish the baseline required to harmonize water chemistry.

Keep in mind that timing for seeing results depends on the current balance in your water. We are happy to report that some users experience great improvements over night.

Generally, it can take over a month to fully cycle your pond’s water. If your pond has been pumped with algaecides for a long time, it will take a little longer to rebuild the ecosystem.

We encourage our pond community to remember, good things often take a little time and attention. It’s worth the wait!

We’re here to encourage you to stop using toxic algaecides!

Secret 4:

If clear sparkly water is not enough, keep in mind that natural pond care delivers big by cultivating healthy water AND a healthy food chain.

To “heal” your pond’s water once and for all, you’ll need to nip core issues in the bud.
So, you may be wondering how to get the process started in your pond….

By increasing the dissolved oxygen (DO) in your pond you are able to improve the enzyme activity of bacteria to trigger an increase in DO and the quality of the aquatic food chain.

Your pond is alive with plants, fish, insects, and birds that rely on oxygen rich water to thrive. They expect a bio filter that removes material waste and a well circulated anaerobic system.

Oxygen is a necessary element to all forms of life and especially for good water quality. Oxygen gets into water by diffusion from the surrounding air, by aeration (rapid movement), and as a waste product of photosynthesis.

You are sterilizing your pond water and working against the natural cycle when you use UV lights, algaecides, and conduct large water changes.

To create a strong anaerobic cycle, you need strong bacteria paired with essential nutrients to encourage diatom growth, which photosynthesize and increase the amount of DO in your pond’s water column. This promotes aerobic bacteria which double every 20 minutes.

Diatoms, bacteria, and zooplankton work together as nature’s filter to consume the extra waste in your pond!

Nualgi Ponds is specifically designed to increase diatom growth and kickstart your pond’s food chain.

When used with beneficial bacteria like Microbe-Lift PBL, pond owners across the world are reporting incredible (and lasting) improvements in the aquatic food chain that continue to get better every year.

Secret 5:

You can do this!

Natural pond care benefits the local environment, your animals, and any children who play in or around the water.

If you get started now you will see benefits this season while getting a head start on next season by creating a water cycle that almost maintains itself. (you’ll still need a rake & gloves)

Your fish and plants are counting on your good choices!

Give it a shot and let the evidence speak for itself… your pond water quality will get better each season! By using nature to consume the bad bacteria you will have a pond that flourishes just like you always wanted.

Let us help you make the switch to natural pond care.

It’s easy. It works. This summer we are running a special promotion offering our SECRET WEAPON to help pond owners take the plunge and make the switch…

Go natural with our power combo!

Combine Nualgi Ponds and Microbe PBL to create a well cycling pond environment. One that is safe for fish, frogs, snails, dogs, cats, humans and… the added bonus, it will have less mosquitoes due to better water quality!

Order the combo package that has helped countless pond owners to achieve crystal clear and healthy water.

Nualgi Ponds + Microbe PBL is one of the most common success stories we hear and have partnered up to bring to you this special offer.

By going natural with Nualgi Ponds you will be able to:

  • Turn off your UV light and reduce electrical costs
  • Stop putting harmful algaecides into the environment
  • Have more time to enjoy the pond and less time maintaining it
  • Take the guessing game out of your water quality
  • Safely swim in the water (if your pond is big enough)
  • Manually scoop less pond scum

Go Natural With Nualgi

Still not convinced to go natural with Nualgi?

Learn how others are thriving after going natural with Nualgi Ponds

It may seem like we are making a lot of claims… but we are serious and confident because our users consistently report how they are able to turn off their UV lights and stop using algaecides.

Hear what REAL users have to say (Don’t just take our word for it)

“Here is one great example of testing I did. It is the only photo documented test I performed. The photos are only of the before and after. This is a test on new pond syndrome, new water. But still, I have not witnessed such a fast elimination of green water without algaecide.” – Christian S.

Christian S.

Owner, Cali Koi

“We are a professional landscaping & water garden company. We do maintenance on about 20 ponds each month. I sell Nualgi because it is a product I believe in & our clients love that it keeps their ponds clean & clear.” – Linda W.

Linda W.

Pond Contractor, Pond-S-scapes, LLC

“My fish have done a complete 180 since using this product with no UV light (that I was using for 2 years prior)! They look better, feel better… And I also just took another pump for air out because this product helps keeping oxygen in the water!” – Roger D.

Roger D.

Pond Owner

Nualgi Ponds – Natural Algae Control + Water Clarifier

Rated 4.60 out of 5 based on 235 customer ratings
(249 customer reviews)


Use Nualgi Ponds™ to naturally balance your pond, control algae growth, and get crystal clear water you and your fish will enjoy more!

SKU: nualgiponds 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.


How Does Nualgi Ponds Work?

Within 3 – 5 hours of applying Nualgi Ponds, a bloom of Diatom algae (the good kind!) will develop. The diatom algae bloom out-compete nuisance algae for CO2, N, P and other nutrients, causing the bad algae to die off. It then locks away some of the harmful nutrients in the new bio mass that is consumed as live food for your fish and zooplankton. The growth of diatoms provides oxygen to bacteria who in turn clean up the waste products of fish and leftovers. The exponential growth of diatoms provides oxygen to bacteria who in turn clean up the waste products of fish and leftovers. This natural process helps clean ponds and make their water sparkling while helping reduce bad odors.

What Are the Benefits of Using Nualgi Ponds?

  • NATURAL ALGAE CONTROL FOR PONDS, WATER GARDENS & FOUNTAINS – Control algae growth and clear green water – without toxic algaecides or expensive UVs!
  • IMPROVE WATER QUALITY & CLARITY – Safely restore missing nutrients & balance your pond’s chemistry for improved water quality and crystal clear water!
  • ELIMINATE OFFENSIVE POND ODORS – Supercharge your pond’s Nitrogen Cycle and puts beneficial bacteria to work cleaning up waste & pond sludge.
  • PROMOTE THE GROWTH OF DIATOMS & ZOOPLANKTON – The diatoms fueled by Nualgi are quickly hunted down and eaten by zooplankton – the preferred live food for your fish!
  • ENHANCE FISH HEALTH, COLOR, AND ACTIVITY – Koi pond owners will see their fish be more active chasing down their free food while health & color improve from a more balanced diet and overall ecosystem.
  • IMPROVE AQUATIC PLANT HEALTH & GROWTH – Water gardeners will see all their aquatic pond plants flourish once your water chemistry is balanced and missing nutrients restored.
  • INCREASE DISSOLVED OXYGEN LEVELS – For many eutrophic ponds, results may be visible by afternoon on the first dose – starting with the bubbling up of oxygen you can see!

How Many Gallons of Water Does Each Size of Nualgi Treat?

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
View More FAQs

249 reviews for Nualgi Ponds – Natural Algae Control + Water Clarifier

  1. Rated 5 out of 5

    David Bates

    Like many preceding reviewers, I too was skeptical of this Nualgi product’s effectiveness but out of desperation, gave it a try anyway. My moderate sized (3500 gal) koi pond I built 20+ years ago, cleared for the first time after 3 weekly doses despite it being significantly overstocked (which I am rather ashamed to admit ). Obviously I will continue to use this effective and environmentally safe Nualgi product and strongly recommend it to other.

    • nualgi (verified owner)

      Thanks David, we appreciate you taking the time to review Nualgi and share your insights. Please consider sharing a photo sometime to our Facebook page or our upload page –

  2. Rated 5 out of 5

    Lauren L. Burke

    It works!
    This product works! Fourth dose was added four days ago. Came home this afternoon and can see the bottom of my pond. The water is nearly perfectly clear. It was solid green before I tried this.

    • nualgi (verified owner)

      Thanks for your feedback Lauren. This is great to hear. Happy Ponding!!

  3. Rated 5 out of 5



    Was skeptical, but my UV filter light bulb broke and I am fed up with cleaning the UV filter and replacing the very expensive light bulb. In 4 weeks, I suddenly noticed I could see the bottom of the pond perfectly!No effort, very little expense compared to a UV filter. Amazing.Now I am dropping a tiny amount in my 10-gal. house aquarium to see how it works–just as an experiment.Thank you!!!!

  4. Rated 5 out of 5

    Jason / 4 minute tech

    Finally the Holy Grail of Pond control
    Finally the Holy Grail of Pond control
    To be honest with you I was skeptical after trying multiple things. I had to stay organic as the fish that’s in my 10,000 gallon pond are food fish tilapia. I was using peroxide for a while but that would kill off a lot of the good bacteria. Ultimately tried out Nualgi and I have to say I’m very impressed and I definitely will be using this product from now on. I no longer have to worry about a green pond or fish dying from wacky numbers like pH and nitrates and all that jazz. Thank you!

  5. Rated 5 out of 5


    Truly Great Product for Koi Ponds!

    I have had a koi pond for almost 20 years. Until 2016, I struggled with algae control, water quality, plant health, and needed to regularly manage water chemistry (pH, nitrates, hardness, etc.). In 2016, I decided to try Nualgi, as I felt like I was losing the algae battle, nevermind the rest of the list. This is my third year and I have to tell you Nualgi has changed my world. It is miraculous! The string algae is gone, water clarity has never been better, the plants are the healthiest they have ever been, and the fish are multiplying! When I clean the biofilter, there is almost nothing in it! I have thrown away all my chemicals and water additives. This morning is my regular weekly day to add Nualgi and I noticed there is ZERO algae in the waterfall! It is really iimpressive. It remains very important to keep chlorine and other antiseptic chemicals out of the pond, so when I add water I use a hose-end chlorine filter on the garden hose. Also, I turned off my UV filter as suggested. But that’s it. No other additives whatsoever!

    I am not sure why there are one star reviews claiming Nualgi is a waste of money. This stuff is the BEST INVESTMENT i have ever made for my pond and waterfall. Awesome. (And the fish and plants have never been better…)

  6. Rated 5 out of 5

    thomas martin

    This product is amazing I started dosing back in June on my 5th dose now my pond is clear and I can see straight to the bottom Thank you nualgi for a great product.

    • nualgi (verified owner)

      Thanks for the review Thomas! Great to hear you and your pond are loving Nualgi!

  7. Rated 3 out of 5

    Donelle Cushing (verified owner)

    Dose 4 this morning. Doing the 10 % water change on Friday mornings then dose Saturday early morning. Still no change in the beautiful bright green water, I do nit nor have I had string algae just this hard to get rid if single cell… In going to continue treatments in hopes that it will clear my water, I miss seeing my fishies

    • nualgi (verified owner)

      Stay patient Donelle :). You could dose every 5 days instead of 7. In problem ponds, you could also dose Microbe-lift PBL twice per week according to their instructions. Once improvements start you can go back to regular dosing of Nualgi. Stay in touch, we’d like to you to see your fish too!

  8. Rated 5 out of 5

    Dar (verified owner)

    I tried this last year in my 3300 gallon pond. Did not have a great result. I had to use an algaecide to remove the string algae. It was pretty much an ongoing battle. This year I made some changes and cleaned grass etc. away from the edge of the pond. I vacuumed and manually skimmed the pond. I also flush the pond out a little every week. I started using the product about 1 month ago and I am pretty impressed with the results. Not one bit of algae so far and it has been very hot. I have a lot of lichen on my rocks and that is being reduced as well. I did notice when ever I dosed the pond it seemed to put the fishies in the “mood”. There was an awful lot of spawning going on. A koinkydink maybe, but awesome product. My fish are far more active then they have ever been and my water is getting clearer all over he time. And my pond does not smell like a static tank. Thanks Nualgi. I wish Canadian stores would carry this.

    • Anil Nanda (verified owner)

      Thanks Dar. When you improve oxygen levels in the pond the fish can get in the “mood”! When animals feel secure, they spawn. We have many users tell us about spawning when using Nualgi. In aquaculture ponds, we have seen numbers grow from 50k fish to over 100k on maturity. There are stores in Canada carrying it. Please contact for list of vendors near you

  9. Rated 5 out of 5

    Jesus L. Opiana (verified owner)

    For pond safety i recommend this product you can see the result no worries losing fish.

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Afraid to make the switch?

If you are feeling nervous about making the switch to natural pond care – you can get our expert support along the way!  We are here to help answer any of your questions about going natural and hope you will take this message seriously.

With us to support you the entire way through the process…so what are you waiting for?

Go Natural With Nualgi