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Pond Worx Pond Bacteria
Leaves, grass clippings, algae, uneaten fish food, fish waste, & decaying plants all contribute to build-up of sludge which is not only unsightly, but unhealthy, as it consumes oxygen. Pond Worx breaks down muck & sludge into an odorless gas that will simply escape out of the water column unnoticed.
Concentrated Formula
Measurable Results Within 90 Days!
Pour directly from container along shoreline or from a slow moving boat. Pond Bacteria can be applied at water inlet. Use caution in windy conditions. Pond Bacteria will slowly disperse and mix uniformly throughout the entire body of water over approximately a 24 hour period. Repeat weekly for 4 weeks. Continue monthly at half the initial rate to maintain water quality.
Available in 16 oz, 32 oz & Gallon
EASY TO USE
Pour directly from container along shoreline. A beautiful pond or lake can be achieved with a little work, some knowledge, and the right products
FOR ANY SIZE POND
This product is safe to use in any size pond. See dosing instructions for smaller bodies of water.
FORMULATED WITH CARE
Will not harm vegetation, fish or wildlife when used as directed.
CONCENTRATED SOLUTION
This concentrated formula is designed for large ponds but also works great in water gardens, koi ponds, and other water features.
kathy king
2025-08-10 15:17:56
I used Pond Worx on our two and a half acre east Kansas pond last August 2022 on the recommendation of pond ecology specialist The Oklahoma Pond Lady Amie Robison. As you can see from the before pic algae and blue green algae were out of control. Our shoreline plants were disappearing and with the heat we were worried about a fish kill. Not to mention that our dog likes to get in the pond and BGA can make animals sick or even kill them. Pond Worx was so easy to use. I just put on knee high boots and waded out at different points around the pond and poured it in. Within a month we started seeing improvement and by the end of two months the results were astonishing. The before and after pictures are from the same spot two months apart and you can see how amazing the difference. This spring the product was still going strong with the water showing a degree of clarity we had not seen in years. This allowed our bass, crappie and bluegill to spawn out in deeper water which saved them from heat stress mortality in our hot dry spring (2023). And our aquatic shoreline plants are back and better than ever. After the big initial dose (eight gallons spread over a month and a half) all we have to do now is put in a jug every month or so while the weather is warm (4-5 months a year around here) to keep the biosystem rolling along so it is very cost effective. If farm or lawn fertilizer run off is causing algal bloom sickness in your pond use Pond Worx to naturally restore balance and complexity to your blue space environment.
NSIW3687
2025-07-31 10:08:58
I have 2,200 Gal pond with eight large KOI's, normally water is kept around 1,600 - 1,800 Gal. There are two 75 Gal wells as primary and secondary mechanical + biological filter as there are Matala filters + 6 Gal of K3 Filter media in there. Both wells are constantly aerated ensure full circulation and to help those bacteria breath a little better. Then another 3500 AquaScape filter + 28W UV and another external 36W UV.For the past 3 years, I've been using Microbe Lift Prof - with a kind of hit and miss result. Hit - during the period where there was less leaves (main culprit is pine needles). Miss - when there were more leaves. As a result, I would have a few weeks of crystal clear water then slowly murky from sludge after 4 weeks . . by the time it hit 6-8 weeks, I must change 30% - 40% of water. Even at this maintenance routine, I began to have green algae growing thicker on all pond walls and water began to turn light green. The foamy gunk is becoming more of an eye soar, . . . I realized that to get out of this cycle, I need to try something different.Having read a lot of reviews, I decided to give Pond Worx a try toward end of April'19. I use a a slightly higher dose than recommended, i.e., first time 16 oz, then 8 - 10 oz. weekly.- First 3 weeks - - I pour Pond Worx in the main part of the pond (where the KOI's are). It does not turn crystal clear yet but it did not get worse either. I review more reviews of Pond Worx and see someone saying the bacteria need good aeration to get better result, so, I gave it a try.- I added Pond Works to the 2 wells instead.Then, turned off the pump and let it sit aerated there for 3-4 hrs (or longer). Then turn on the pump. Within 5 days, the pond became crystal clear. Foamy gunk is still there but much less.I have maintain this weekly routine for another 6 weeks and the water is now crystal clear, algae on the walls are almost gone. So far, from W1 - W9, I did not do any major Water change. Just add more refill to replenish those the evaporated during the the very hot month of June.So far, I'm quite satisfy with this product and about to re-order.
Portawhop
2025-07-21 16:52:48
Worked very well
Lorenzo
2025-07-19 18:32:16
I saw a guy on YouTube (Ozponds) who is a pond builder who also maintains ponds. He does not use any filtration other than some sort of bio media (gravel) and this for crystal clear water. I took out my canister filter and UV light altogether. I added bio media (I used clay balls intended for hydroponic gardening) to increase surface area in my pond. I added an air stone for extra aeration for the bacteria to thrive and this product and my pond is crystal clear year round for 2 years now. No hassle. I scoop out leaves once per week and add a capful of this. No more cleaning filters. Fish are happy. Water is perfect. No Mechanical filter whatsoever.
sgb
2025-07-14 11:10:58
The media could not be loaded.
Customer
2025-06-29 10:13:20
Update: this worked well at first then seemed to cause more muck than it got rid of and we lost a lot of blue gill.******************************(((We have a fairly large pond (@ 1/4 acre and 8 ft deep) and have koi so did not want anything that was toxic to control the algae. This combined with the dye works well. We had a lot of algae on the sides of the pond, my husband scooped as much out as he could then added 1/2 gallon of this and it cleared within a week. We had a drought that almost emptied the pond last year, then received enough rain this spring to fill it back up so the good bacteria needed to be restored, which this did.
May
2025-06-24 10:03:11
My small koi pond was full of algae due to direct sunlight for more than 10 hours a day. Despite 2 UV lamps algae still cover 70% of the sides and base. 2 weeks after applying Pondworx the base and sides began to clear up to 40% and the aeration pumps also became more vigorous! Bought second bottle already!
Anneke
2025-04-21 16:58:22
My garden has a very large natural pond which unfortunately had a problem with biofilm.I used the full container of PondWorx Pond Bacteria and the following day the pond was much improved; a couple of days on and the pond has greatly improved and the water is clear. I can actually see the fish again, which by the way are unharmed.I would definitely recommend and will continue to use periodically or should the pond have another problem with biofilm. Depending on the size of your pond it could become expensive, however this works.
ANNA Murphy
2025-03-10 12:55:53
The media could not be loaded.
tina hall
2024-12-12 13:33:59
Brilliant stuff. Value for money and works a treat. You do need to use regularly to keep the effectiveness up. We have a large pond pool120k+ ltr
Michael G.
2024-12-04 16:12:15
Large bottle and a good price
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