Dr. Tim's Aquatics Ammonium Chloride Solution for Cycling Aquariums, 2-fl oz bottle

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About This Item

Details

  • Reagent-grade ammonium chloride for use during fish-less cycling.
  • 50 mg/L of total ammonia-nitrogen (TAN) concentration.
  • Pre diluted ammonium chloride makes fish-less cycling easy and establishes aquarium biological filtration.
  • Concentrated ammonium chloride solution treats up to 1,200 liters. The pre-measured formula is easy to use; 4 drops per-gallon equals 2 ppm ammonia-nitrogen.
  • Does not contain scents or other dangerous additives.

Ingredients

Instructions

FAQ

Learn More About Dr. Tim's Aquatics From Our Team of Experts
Special Note

2-oz bottle treats up to 300 gallons.

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Questions & Answers

6 Customer Questions

My reef tank will be 88 gallon with a 24 gal sump. How much ammonia should I use? Would I dose a tablespoon plus a teaspoon? I see that would be equal to 400 drops. Correct?

Answer by Chewy • May 27, 2020
It is recommended to use 4 drops of solution per gallon. 1 drop equals 0.05 ml so this 2 ounce bottle will treat 300 gallons (1,135 liters), one time to a concentration of 2 mg/L TAN. For an 88 gallon tank, you'd need to dose approximately 352 drops which would be equivalent to a tablespoon and 1/2 teaspoon. Some helpful conversions are below: 1 drop equals 0.05 ml 1 ml equals 20 drops 1 teaspoon equals about 5 ml which is 100 drops 1 tablespoon equals almost 15 ml which is 300 drops

IS IT ONE DROP PER GALLON OR 4 DROPS PER GALLON

Answer by Chewy • Jun 08, 2019
It's recommended to add 4 drops of solution per gallon of aquarium water to achieve an ammonia-nitrogen (NH3-N) concentration of 2 mg/L-N (2 ppm).

Can this be used to cycle a tank with Fluval Cycle?

Answer by Chewy • Nov 26, 2020
It is recommended that this solution be paired with Dr Tim's Aquatics One & Only Live Nitrifying Bacteria for Freshwater Aquariums, Reef Aquariums, or Saltwater Aquariums to meet your needs.

is this good to jump start a saltwater aquarium

Answer by Chewy • Jan 09, 2020
This prediluted ammonium chloride makes fish-less cycling easy and establishes aquarium biological filtration an is recommended to be used with Dr Tim's Aquatics Live Nitrifying Bacteria for Saltwater Aquariums.
Reviews
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4.6
Rated 4.6 out of 5 stars
65 Ratings
Terms & Conditions

43 Customer Reviews

Rated 1 out of 5 stars
By Robert on Jan 16, 2026

Trying fishless cycle not working to well

Trying a fishless cycle but doesnt seem to be working as the directions say. I followed the directions to the "t" and still cant get the ammonia ppm above 1 ppm

Trying a fishless cycle but doesnt seem to be working as the directions say. I followed the directions to the "t" and still cant get the ammonia ppm above 1 ppm and by the next day its dropped back to 0.50ppm. The nitrites are the only thing that is very high. Not sure if its working or not. Im on day 6 of 8 per instructions and dont think ill be cycled in the next 2 days. This was the only pure ammonia product i could find and read other reviews that said it works and others that say it doesnt work. Im on the side of it doesnt work. Also seem to he missing a paper to record the ammonia, PH and nitrite evry 24 hours. Only got the bottle

Rated 5 out of 5 stars
By Erin on Dec 25, 2025

Perfect

I used this to cycle my tank, and it worked pretty well. It does raise the ammonia levels though, so be aware of how much you use. Otherwise, it’s an amazing product,

I used this to cycle my tank, and it worked pretty well. It does raise the ammonia levels though, so be aware of how much you use. Otherwise, it’s an amazing product, highly recommend =]

Rated 1 out of 5 stars
By Brian on Oct 17, 2025

Scam

Got a bottle of water. By the time I noticed my pH dropped and my cycle crashed. Couldn't figure out why my ammonia was reading 0 on API testing, then ended up testing

Got a bottle of water. By the time I noticed my pH dropped and my cycle crashed. Couldn't figure out why my ammonia was reading 0 on API testing, then ended up testing the solution straight and test vile was CLEAR. My tap water has more ammonia than this Snake Oil. Stay away....

Rated 5 out of 5 stars
By Alan on Nov 20, 2025

Excellent product

Best way to start a solid aquarium cycle, doctor Tim’s ammonium proves to be the most trustworthy on the market for me.

Best way to start a solid aquarium cycle, doctor Tim’s ammonium proves to be the most trustworthy on the market for me.

Rated 3 out of 5 stars
By Gayle on Dec 27, 2025

Cycling my aquarium

Did not help cycle aquarium any faster really disappointed

Did not help cycle aquarium any faster really disappointed

Rated 5 out of 5 stars
By Greg on Oct 31, 2025

Used this to get my aquarium cycled without fish

This ammonia worked well with the cycling my aquariums preparing for fish.

This ammonia worked well with the cycling my aquariums preparing for fish.

Rated 5 out of 5 stars
By Emily on Sep 5, 2025

Best For Cycling

The only product I use to cycle new tanks.

The only product I use to cycle new tanks.

Rated 5 out of 5 stars
By Shaleigh on Mar 31, 2025

Twisted Aquatics

This is the only stuff that I use to cycle my tanks for my business, and I always keep it on hand!

This is the only stuff that I use to cycle my tanks for my business, and I always keep it on hand!

Rated 5 out of 5 stars
By Robert on Apr 20, 2025

Quality of the product

It went right to work with my fishless cycle and got my cycle done in half the time!

It went right to work with my fishless cycle and got my cycle done in half the time!

Rated 5 out of 5 stars
By Zoe on Mar 12, 2025

Essential tank cycling supplies

Absolutely critical for safe and effective tank cycling

Absolutely critical for safe and effective tank cycling