Pondworx Pond Bacteria - Concentrated & Formulated for Large Ponds, Water Features - Safe for Koi - 32ounes & Treats up to a Quarter Acre Pond

We use it on our Koi pond. Works very well. There is algae control. Water doesn't smell. Safe for plants and Koi. It is pricy.

I have used this product now for two weeks once’ a week on my 350 gallon pond,it has cleared up the muck and water has cleared up.

Worked very well

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.

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.

So once I got this I had to do some calculations on depth and dimensions to figure out the dosage. Right now I have barley sacks and have been adding the amount weekly. The water seems a little bit clearer after 3 weeks. Although I still see algae in my pond. I emailed the company to try and get more information. They said the product will do nothing for previous algae growth. So I am hoping the barley will take care of that (takes 3-4 weeks for that to start working) and the beneficial pond bacteria will balance the water from future algae growth. Will update with changes. I plan on using it up in my 1100 gallon pond till it runs out. If it gets better by the end of the bottle I’ll up the stars and buy more. My fish and turtles haven’t been affected by it. Ponds are tricky and I inherited this one when I bought my house. I realize it may not be one simple fix.

I have purchased this before. It works very well with my pond.

The media could not be loaded. 1 Gallon of Pond Bacteria for only $26 seems like a great price and unbelievable deal. That's what got me to buy this instead of my usual "Eco Labs 971047 10PLG4 Microbe Lift PL Bacteria". I was running out and during my Amazon search it brought this cheaper alternative.I purchase it because it was so cheap compared to the Microbe Lift PL which is about $50 for 1 gallon.Well as soon as I put in the correct amount for my pond. I notice immediately that it started to cloud my pond. So I pour it into a clear cup and the liquid is a cloudy white color. So I let it do its job but I also wanted to check on my very active and healthy Koi's in an hour.What I discovered is that my Koi's suddenly stop be active and didn't react to me being there, which is odd because when they see me, they all go up and get ready for feeding. But this time they didn't after I pour this into the pond.I so immediately drain my pond 100% and fill it up with fresh treated water. About 2 hours later my Koi's are back to normal. I have since learned my lesson to stick with what has been working great for me over the years, which is the "Eco Labs 971047 10PLG4 Microbe Lift PL Bacteria". Yes it's double the price of this bottle but it works and my Koi's have no issues with it.