---
product_id: 23334640
title: "Fritz Pro Aquatics Ammonium Chloride - Ammonia Source for Fishless Cycling (500 g)"
brand: "fritz aquatics"
price: "$94"
currency: NZD
in_stock: true
reviews_count: 12
category: "Fritz Aquatics"
url: https://www.desertcart.nz/products/23334640-fritz-pro-aquatics-ammonium-chloride-ammonia-source-for-fishless-cycling
store_origin: NZ
region: New Zealand
---

# Professional-grade purity & stability 4.5g/100gal = 4ppm NH3 Made in USA, 100% employee-owned Fritz Pro Aquatics Ammonium Chloride - Ammonia Source for Fishless Cycling (500 g)

**Brand:** fritz aquatics
**Price:** $94
**Availability:** ✅ In Stock

## Summary

> ⚡️ Ignite your aquarium’s nitrogen cycle like a pro—no fish needed!

## Quick Answers

- **What is this?** Fritz Pro Aquatics Ammonium Chloride - Ammonia Source for Fishless Cycling (500 g) by fritz aquatics
- **How much does it cost?** $94 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/23334640-fritz-pro-aquatics-ammonium-chloride-ammonia-source-for-fishless-cycling)

## Best For

- fritz aquatics enthusiasts

## Why This Product

- Trusted fritz aquatics brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Made in the USA:** Support quality and sustainability with a 100% employee-owned American brand.
- • **Trusted by Pros:** Used by public aquariums and experts for reliable, consistent nitrifying bacteria activation.
- • **Fish-Safe Cycling:** Kickstart your nitrogen cycle without risking your aquatic friends—ideal for fishless aquarium setups.
- • **Economical & Efficient:** High concentration means less product, less waste, and more value for your aquarium investment.
- • **Precision Dosing Power:** Just 4.5 grams per 100 gallons delivers a perfect 4 ppm ammonia boost for optimal bacteria growth.

## Overview

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.

## Description

In most aquariums, the biological cycle is started by introducing fish into the aquarium. The fish excrete ammonia which acts as a food source for nitrifying bacteria. Nitrifying bacteria convert ammonia into nitrite and then nitrite into nitrate. Fritz ammonium chloride (nh4cl) can be used as a source of ammonia to initiate the growth of nitrifying bacteria without the presence of animal life. Fish should not be present while using ammonium chloride.

Review: 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.
Review: 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.

## Features

- Essential for Nitrifying Bacteria: Provides a precise ammonia source required for beneficial bacteria such as FritzZyme or TurboStart to thrive and complete the nitrogen cycle when fish are not present
- Only dose in systems with no livestock, for fishless cycling only
- Highly Concentrated Formula: Economical and efficient — just 4.5 g per 100 gallons produces approximately 4 ppm of ammonia. A little goes a long way
- Controlled Start: Fishless cycling can reduce risk to sensitive fish during cycling; always test ammonia levels to confirm the cycle is complete before adding livestock
- Professional-Grade Quality: Trusted by aquarium professionals and public aquariums; dry, stable, and easy to measure for exact dosing
- Made in the USA, 100% employee-owned company

## Technical Specifications

| Specification | Value |
|---------------|-------|
| 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 |

## Product Details

- **Brand:** Fritz Aquatics
- **Item Form:** Powder
- **Liquid Volume:** 1 Cups
- **Manufacturer:** Fritz Aquatics
- **UPC:** 781163682493 080531895009

## Images

![Fritz Pro Aquatics Ammonium Chloride - Ammonia Source for Fishless Cycling (500 g) - Image 1](https://m.media-amazon.com/images/I/61T0GhILgGL.jpg)
![Fritz Pro Aquatics Ammonium Chloride - Ammonia Source for Fishless Cycling (500 g) - Image 2](https://m.media-amazon.com/images/I/712xGidO3SL.jpg)
![Fritz Pro Aquatics Ammonium Chloride - Ammonia Source for Fishless Cycling (500 g) - Image 3](https://m.media-amazon.com/images/I/712guQkoFKL.jpg)
![Fritz Pro Aquatics Ammonium Chloride - Ammonia Source for Fishless Cycling (500 g) - Image 4](https://m.media-amazon.com/images/I/81wn2P4B2PL.jpg)
![Fritz Pro Aquatics Ammonium Chloride - Ammonia Source for Fishless Cycling (500 g) - Image 5](https://m.media-amazon.com/images/I/71vJVdtfPrL.jpg)

## Questions & Answers

**Q: Is 1 teaspoon good for a 10 gallon?**
A: 1 teaspoon is way way too much for 10 gallons.  Less than 1/8th of a teaspoon for 10 gallons - I'd suggest 1/16th.

**Q: How much do I use for a 75 gallon tank?**
A: 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. I would start with half a teaspoon. Check the level of ammonia, if you still haven’t reached 4ppm then add smaller doses until you do.

**Q: Typically you try to keep chlorine out of an aquarium (esp. saltwater). My goal is a fishless cycle; is there a reason to use nh4cl over pure nh3?**
A: My thought is that the dechlorinator used in water changes should remove the chlorine put in when using the Ammonium chloride.  It worked for my fishless cycle.

**Q: How much do i put in for a 55 gallon tank?**
A: Depends follow Mr Crafty Pants on YouTube.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fast & lots of product. Works as intended.
*by D***S on November 6, 2025*

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.

### ⭐⭐⭐⭐⭐ Perfect for micro dosing cycles
*by M***. on April 9, 2022*

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.

### ⭐⭐⭐⭐⭐ Fritz Pro Chloride
*by C***Z on August 2, 2023*

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

## Frequently Bought Together

- Fritz Pro Aquatics Pure Ammonium Chloride for Fishless Cycling and a Safe Tank Environment (500-Gram)
- Thick-It Original Thickener, 10 Ounce
- Thick-It Original Food Beverage Thickener Canister, 36 Oz

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-15*