Nualgi Natural Pond Cleaner (60ml) – Clarifier Treats 60,000 Gallons

I have been using this product on a 800-gal koi pond with one large koi and two shubunkin goldfish. Bottom line, it works great at stopping free-swimming algae. The water in my pond is very clear and clean. My fish are healthy. I was using a traditional algaecide before I switched to Nualgi, and my main reason for switching is that my cats and neighborhood wildlife like to drink from the pond and I didn't feel great about these animals drinking the algaecide, even at diluted concentrations. Even with the algaecide, I struggled to keep free-swimming algae at bay, and the pond water often looked murky. The plants in and around the pond were dying. Total water changes and pond bottom cleanings did nothing to help. I was using beneficial bacteria but to no avail. I switched to Nualgi in the spring, after the winter cold killed off most of the algae that had bloomed in the summer and fall. Right away, I noticed that string algae was forming on the waterfall that is part of the filtration and aeration system, but the floating algae was not coming back. Two years later, I still have zero issues w/ swimming algae. I do get string algae on the waterfall still, but that is easy to pull off in clumps and does not affect the clarity and quality of the water. The fish are healthier and more active, and the plants in the pond all came back to vibrant life. I did not change any other aspects of my pond care regimen, other than changing to the Nualgi. The beneficial bacteria colonies have rebuilt themselves in the pond and the Nualgi seems to work in a complementary fashion with the colonies to make my pond clean and clear. Nualgi is a great value for the price, bc so little goes a long way. I add about 1/4 of a tsp once a week -- that's it. So easy. Highly recommend you give it a try, but wait until your algae has died off a bit. I didn't find it effective in clearing a murky pond but rather in preventing the swimming algae from taking over otherwise clear or decent water.

Love this product. Keeps my water clear.

It REALLY works! This product works stunning well to clear cloudy water that was especially clouded with algae. Like pea soup. We could not see a single fish, let alone the bottom of the pond. Two days after the first application we could see that it was working. After a second application (you only have to use a little bit) the results really started to show and it has been about 10 days and we have a fairly clear pond... we see all of our fish and we see the bottom of the pond! Every year we have a pea soup mess of algae like this during this time of year as our pond is in full sun and surface plants haven't multiplied enough yet to provide decent shade. The result we are seeing is quire amazing. I am feeling pretty confident will be crystal clear within a week.

Read about Nualgi and the concept sounds good. Grow Diatom and have them eat up the nitrate and starve the algae. Shutdown my UV so it won't kill the diatom. I have a 2000 gallon pond with just 4 kois so it is not heavily stocked. I only feed them once a day. You only need to add 1ml per 1000 gallon so I bought the smallest bottle to try which is 60ml. This should last 30 weeks for me. Expected results can vary from a few days to up to 4 weeks so decided to try it for at lesst four weeks. I was careful not to over dose as it contains metal which can be harmful to kois if you add too much. Did notice my kois were much less active once I started adding nualgi. After 4 weeks, no improvements at all. I was really hoping this would work because Diatoms would lower the nitrates. UV filter would just kill the algae but the nitrate is still there so I liked Nuagli's approach better. I will wait another 1 to 2 weeks then go back to my UV filter. Hope other users have better luck. I was hoping to at least see some kind of improvement. Attached weekly pictures. No visual improvements. June 18, 2022 Up-date Changed rating from 1 star to 4 stars. Christian at Nualgi suggested my problem may be because my pond has no diatoms. I added 3 gallons of water from one of my fishtanks and put as much diatoms as I can then waited a month. After 1 month, added 2ml of Nualgi and the pond cleared up in 3 days. Seems to be working. It was hard to believe my pond didn't have any diatoms. Regardless, glad the algae is gone and I can now see my kois. Nitrate levels seems to have gone down also. Didn't use my UV filter at all.

I fought pea green algae for 3 years in my 300 gallon in ground concrete koi pond. I had no problems with string algae. I tried 3 other popular algaecides you see online and in stores. They didn't work at all and made the fish gasp for air. So I was reluctant to try anything else especially since this product is a little more expensive. Out of desperation I thought I'd give it a try. I followed the directions and saw no difference for the first 10 days. Then the water turned from green to brown then gradually began clearing. After 4 weeks it is crystal clear. I haven't used it long term so I can't speak to that, but it did work as stated, at least for my situation. The fish don't seem bothered by it either.

This is the second time I order this product. First time was awesome so I ordered more. Second time - it was just like dirty water, not to mention it has NO impact on the pond. Now that the return window is closed, I am stuck with something that absolutely did not work the way the first product (identical) worked. Disappointed. If you buy this, make sure if the liquid inside looks like dirty water, return ASAP

I received a new fresh bottle of Nualgi on July 2, 2023...today my pond is crystal clear again. I had used Nualgi back in 2018 to clear up a terrible algae bloom I couldn't get rid of. I fead reviews on Nualgi back then, ordered it and I had a crystal clear pond within 2-3 weeks, as I recall. This year I started my pond up mid June as had been so cold in the spring...then it got terribly hot right after and I had pea soup in my pond right away. It was so green you couldn't see the poor little goldfish. I tried everything including a complete water change and vacuum of the interior; and, I had pea soup again in a couple days. Nothing I had on had would clear it up (I had thrown out my old Nualgi as figured it was old). Ordered a fresh bottle of Nualgi on July 1, and now, 8 days later, I have a crystal clear pond for the 1st time this year. Thank you Nualgi. I love this stuff...just have a little patience...it sure has worked for my little 100 gal pond.

it works, but need to add more than the dosage recommended

This product is a must for your pond! I have used it for about 4 years now. A little goes a long way! You do not need to run the uv light on your bio filter and it is all natural! It is expensive but lasts and makes your pond water super clear. It is worth it! You have to try it!! You just put in enough for the size of your pond once a week. When the temps get cold...like winter I run my pump bio filter and you put it in one a month for maintenance. We live in Southwestern Ontario, Canada

Product certainly seemed to help clarify pond but I also introduced a uv light at the same time so they may well have worked together.

This must be a joke. I had a pretty clear pond, with a bad string algae problem. I did exactly as the instructions said. Turned off my UV light, I went to a local swamp and got some water to make sure I had some diatoms in my water and then added the appropriate amount of the product. It's been 3 weeks and I can't even see the fish in the pond anymore. Now I have a green pond with a bad string algae problem. This is snake oil.

ok

Not impressed. For the price of this stuff, it doesn’t work that well. I added it to our pond and it didn’t do much at all to clear the water. Maybe for hydroponics it is better.