








⚡️ Ignite your aquarium’s nitrogen cycle like a pro—no fish needed!
Fritz Pro Aquatics Ammonium Chloride is a highly concentrated, professional-grade ammonia source designed for fishless cycling. By precisely dosing 4.5 grams per 100 gallons, it safely initiates nitrifying bacteria growth to complete the nitrogen cycle without livestock. Trusted by aquarium professionals and made in the USA, this 500g pack offers an economical and stable solution to establish a healthy aquatic environment while protecting sensitive fish from cycling stress.


| ASIN | B00OTH5TAQ |
| ASIN | B00OTH5TAQ |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #21,108 in Pet Supplies ( See Top 100 in Pet Supplies ) #200 in Aquarium Water Treatments |
| Brand Name | Fritz Aquatics |
| Breed Recommendation | All Breed Sizes |
| Customer Reviews | 4.7 4.7 out of 5 stars (4,244) |
| Date First Available | November 1, 2014 |
| Date First Available | November 1, 2014 |
| Directions | Aquarium ammonia concentration should be raised to 3- 4 ppm before adding a source of nitrifying bacteria such as FritzZyme or FritzZyme TurboStart. Be careful not to use too much ammonium chloride. One level teaspoon of ammonium chloride is approximately 4.5 grams, 4.5 grams per 100 gallons of aquarium water will create an ammonia concentration of approximately 4 ppm. Continue to monitor both amm… |
| Included Components | 89500 |
| Item Dimensions LxWxH | 4.7 x 3.75 x 3.75 inches |
| Item Package Dimensions L x W x H | 8.43 x 4.84 x 1.85 inches |
| Item Weight | 1.01 pounds |
| Item model number | 89500 |
| Item model number | 89500 |
| Manufacturer | Fritz Aquatics |
| Manufacturer | Fritz Aquatics |
| Model Name | Fritz PRO - Ammonium Chloride - 500gm |
| Number of Items | 1 |
| Product Dimensions | 4.7 x 3.75 x 3.75 inches; 1.01 Pounds |
| Size | 500gm |
| Specific Uses for Product | Coat |
| Target Audience Keyword | dogs, fish |
| Warranty Description | See Manufacturers Website |
D**S
Fast & lots of product. Works as intended.
Doesn't come in a cup but instead a larger zip-lock package. There is A LOT of product in it and I mean a lot, I struggled to close the bag a lot. My tank was alr at 0.50 and a little less than 1/8 of a tsp raised it to 2 in less than an hour, it works very well and fast.
M**.
Perfect for micro dosing cycles
Using this to cycle my new 90gl. My system has been running for a couple of months already, but I've been to busy to do anything with it since I set everything up. This stuff works great. Getting the measurements correct are a little hard, but I found that 1 tsp raises my NH3 to near 0.067 mg/l. The first dose took around 2 weeks to cycle. Once the ammonia levels dropped back to 0.001 mg/l my NO3 tested at near 5.0 ppm. The amonia levels from the second dose of 1 tsp is still reducing, but it's only taken 4 days to drop down to 0.018 mg/l. I plan on testing Nitrate levels once this cycle is completed and duing a 50% water change before dosing a third time. I think 3 to 4 cycles should be enough to stabilize the system. However, since I won't be adding livestock for another month or two. I'll probably add 1/16-1/4 tsp each day to feed the bacteria. I'll adjust that as needed. Hopefully, I can maintain my NO3 at 3-5.0 ppm with this. I definitely recommend this product if you want to save yourself some time. I prefer this method of micro dosing while cycling my tanks. I think it's easier to mimic a normal daily feeding schedule this way. Also, I get a pretty good idea of how my tank params will change daily when checking my system logs. I may increase my daily dose later about a week or two before doing a final water change and adding livestock. I use the Seneye Reef for active monitoring, and manually test the water weekly.
C**Z
Fritz Pro Chloride
I was skeptical that this would "chemically" burn wood, but it does. I am still learning abt pyrography techniques, but with this product, a proven wood burning recipe & my cricut .. well, I am having a blast. It seems one has to have a wood burning tool for more artistic endeavors, but then again.. maybe not. The approach is different with this chemical, mixed into a paste with another product (Thick It or Cornstarch) but the results R kind of amazing as long as you embraceba different approach & practice PATIENCE. This is not a technique to be rushed. Good Product & Economical, too. Highly Recommend
W**L
A lifetime supply
Here's what I did - YMMV. I wanted to bring my ten gallon up to 2 ppm. So I figured I'd need 1/20th the dose it would take to bring a 100 gallon up to 4 ppm, or 1/20th of a tsp. So I put 20 teaspoons of water in a jar, and then mixed in 1 tsp of Fritz powder. I mixed it up real good, and then added 1 tsp of this solution to my 10 gallon. I waited an hour for it to circulate (filter on) and then tested my water. The results were about 2 ppm, maybe a little higher, but 2 ppm or so as best as I could tell with my old eyes. I flunked chemistry in high school, so take my advice with a grain or two of NaCl (haha! chemistry!). But it seemed to work for me. What do you think, sciencey internet people? Also please do not do this with fish or other creatures in your aquarium. I'll update this review as my aquarium cycling adventure continues. For now I can definitively say, this stuff will work to raise your ammonia levels for FISHLESS aquarium cycling. Also I have enough of this stuff left to cycle all the tanks at the Monterey Bay Aquarium. Twice.
B**B
Not in a jar as shown
Works well, but didn't come in a jar as shown. It came in a bag, which makes it a little harder to save unused product. Enough for a couple thousand more times.
J**A
Use for wood burning look
Use for cricut projects to get the wood burning look. Looks awesome
D**.
Best stuff there is
Okay. So for those of you first starting a fish tank over 10 gallon, you know you have to cycle the tank. This can be done with fish or without, though without is the best and the more humane. The directions day 1 teaspoon of this powder for 100 gallons of water. I used 1/4 tsp for a 40 gallon bowfront aquarium and it gave me an ammonia reading of about 4PPM. ( this is what I was aiming for). It works in a matter of about 2 minutes. This is also a HUGE container. You can cycle probably 1000 fish tanks with this stuff. The container has about 2 full cups of powder and you'll use about 1/4 teaspoon or less for a 40 gallon. Highly reccomend to get your tank started cycling.
S**R
Works for fishless cycle
Works as advertised. Didn’t know there was the liquid option so I ended up with the container that’ll last me a life time. 1/8 teaspoon per 12.5 gal and adding api quick start **DAILY**. 1st dose 2ppm ammonia 48 hours nitrite to nitrate. 2nd dose 2ppm 30-36 hours nitrite to nitrate. 3rd dose 4ppm. 24-32 hours nitrite to nitrate. 4th dose 24 hour nitrite to nitrate. 5th dose ammonia for CONFIRMATION. 0 ppm ammonia/nitrite under 20 hours. Fully cycled in 8 days! Update: QT 2 gal, new filter, no substrate, one decor, and a few small plants. Dropped 2PPM ammonia using diluted ammonia method. Dose beneficial bacteria. Tested ammonia daily and still present after a week. With previous reviews on not getting cycled and myself now, add substrate to cycle. Couldn’t cycle without substrate.
G**A
Works well for fishless cycle. Took about a month and a half to cycle a new 100gallon tank using this. Would be better if they sold it in a smaller capacity. Took like 50gms or lesser for a full cycle. I’m left with 450gs now.
L**H
Bought this for cycling aquariums. Works well. It does its job.
A**R
awesome
C**N
Lid was not secured and all the contents had emptied into the delivery bag. Not impressed and would like a response and refund.
Trustpilot
3 weeks ago
3 days ago