Dr. Tim's Aquatics Ammonium Chloride Solution for Cycling Aquariums is a reagent-grade ammonium chloride for use during fish-less cycling. With a concentration of 50 mg/L of total ammonia-nitrogen (TAN), a single drop is all you need for every gallon of aquarium water.
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 gallons. 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.
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). Do not exceed 5 mg/L-NH3-N or NO2-N in the aquarium during cycling. Use an ammonia test kit to monitor your progress. 1 drop equals 0.05 ml so this bottle will treat 300 gallons.
Does this bottle have an expiration date or does it never expire ?
Yes. We recommend adding ammonia 3 times during the fishless cycling period and a 2 ounce bottle is enough to dose a 100 gallon aquarium 3 times. So plenty to cycle your 36 gallon tank.
Does this solution contain chlorine? The label says it's NH3-N but name is Ammonium chloride.
The product is ammonium chloride dissolved in pure water. It does not have any chlorine in it. The ammonia is measured in units of NH3-N
Product works great for dosing ammonia. A lot safer than hardware brands that you dont know what else has been added. However start with 1 drop per gallon and test and and go up from there. As a lot of people say 4 drops per gallon is way to much. I ended up at 2 drops per gallon to get to 2PPM. Also be sure to dose to the actual gallons of water in your tank not the aquarium size. You can easily add to much.
on Feb 19, 2021
Got this to cycle one of my tanks and it does it’s job well. It’s way better to do a fish less cycle
Great product, amazing turnaround time
on Dec 7, 2020
I am starting a fishless cycle. I ordered this on a Sunday morning and then received it just about 24 hours later. I was not expecting that and couldn't be happier with both the product and Chewy.com
Cheap and Easy
on Sep 29, 2020
I feel that using fish to cycle a tank is not humane, so I opted to do a fishless cycle using this product along with a bottle of beneficial bacteria to cycle my tank. I had established media that I borrowed from one of my other tanks, but needed to triple the capacity as this new tank was huge. This product worked GREAT. As others have stated, the dosage as instructed seems to be too high. I used 1 drop per gallon of water and it worked perfectly, granted I already had colonized media in my filter, so maybe 2 drops/gal would be ideal for a brand new tank.
Directions can’t be right.
on Aug 31, 2020
I followed the directions and the video available on YouTube and the company website. Thankfully I did this before adding any fish. My ammonium went through the roof, at 8 ppm or higher since the testing only goes that high. I ended up adding a second bottle of bacterial in hopes to bring it down, which is has started to come down, but certainly not like the video explained. I may follow the video and once the ammonia is at zero do a second run with way less ammonium. If it wasn’t for the fact that the bottle of bacteria is over $20 for 4 Oz, I would consider dumping all the water. I’d you buy this beware that the directions cannot be accurate.
Dr. Tim's Aquatic Aquarium cycling Solution
on Aug 8, 2020
This is the first time I am trying this product, was not aware there were other steps. I found the info on the bottle, went to the website to find the necessary process, additional needs and more. I even found many answers no one else even addressed when I made my inquiries locally. Bit pricy, but if it works & solves the issues with my tank restart, I am going to definitely repeat with my other two tanks. After three years, this is the easiest most informative information I have found in one location.
Works for Cycling
on Jul 4, 2020
This product is actually really good to start your aquarium. The bottle is small and convenient. However when squeezing the bottle I kind of wish it did droplets instead of a spritz. I don't know how else to word that. Maybe I don't know my own strength. But when you gently squeeze the bottle a lot comes out of it instead of droplets, You have to be really careful or else you'll end up putting too much ammonia in your tank
on Mar 3, 2020
A very convenient option for fishless cycling when you want to know exactly how much ammonia you're adding (vs adding fish food or a piece of shrimp). Made it easy to dose our tank as needed to get the cycle going.
Excellent for a fishless cycle
on Dec 5, 2019
Great product for cycling any aquarium, follow the instruction and make sure the ammonia levels reaches 1-2ppm then let the bacteria grow. Highly recommend!
Be Wary of Dosage
on Aug 16, 2019
I'd suggest Dr. Tim's to everyone. It is much easier and safer to fishless cycle this way, and it gives me peace of mind that there are no harmful additives. Additionally, Chewy.com has the best price anywhere on this product. The reason I only gave the product 4 stars is that the dosage suggestion on the bottle is inaccurate. To dose to 2 ppm of ammonia, I only had to add 2 drops per gallon.