SKU: 67007294515

Seachem Reef Nitrogen

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Description

Seachem Reef NitrogenSeachem Reef Nitrogen Seachem Reef Nitrogen is a nitrogen supplement for reef aquariums that provides nitrogen in a fully testable form to support the metabolic processes, protein synthesis, and growth of corals and macroalgae. Nitrogen Supplement for the Reef Aquarium Provides Nitrogen in a fully testable form Concentrated 25,000 mg L Nitrogen (110,750 mg L Nitrate) Nitrogen is an essential element required in metabolic processes, protein synthesis,

Seachem Reef Nitrogen

Seachem Reef Nitrogen is a nitrogen supplement for reef aquariums that provides nitrogen in a fully testable form to support the metabolic processes, protein synthesis, and growth of corals and macroalgae.

  • Nitrogen Supplement for the Reef Aquarium
  • Provides Nitrogen in a fully testable form
  • Concentrated 25,000 mg/L Nitrogen (110,750 mg/L Nitrate)

Nitrogen is an essential element required in metabolic processes, protein synthesis, and growth of corals and macroalgae. Research suggests a tightly closed nitrogen cycle on reefs where concentrations are higher in micro-zones near the corals (Radecker 2015, Wiedenmann, 2023) than in the surrounding water. 

It is important to maintain nitrogen levels along with phosphorus levels in order to allow for optimal growth and coloration of corals and macroalgae.

Supplementing with inorganic nitrogen provides a targeted means of increasing nitrogen without also adding phosphate or dissolved organics. A typical nitrate test will show all forms of nitrogen being added by Reef Nitrogen™. Reef Nitrogen™ is ideally suited for use with an aquavitro® sentia™ dose doser to maintain nitrogen at consistent concentration based on your aquarium's unique demand. Reef Nitrogen™ is easily dosed manually as well. Ideal nitrogen levels will vary but generally range from 1 – 2 mg/L (4.4 – 8.9 mg/L nitrate). Use Seachem’s Reef Phosphorus™ to achieve a balance of nitrogen to phosphorus levels for optimal results.

Directions:
Beginner
Use 1 cap (5 mL) per 160 liters (40 US gallons) twice a week or as needed to maintain desired nitrate levels. For new aquariums or aquariums with low populations of coral use ¼ to ½ dose initially and gradually increase as necessary.

Advanced
The beginner dose raises nitrogen by 0.78 mg/L or approximately 3.5 mg/L nitrate. To target a specific nitrate level, increase dose according to the following formula: 0.009vn=m where v= volume of tank in liters, n=desired nitrate increase, and m= volume of product to use in mL. For example, to raise 160 liters by 3.5 mg/L nitrate you would use 0.009*160*3.5 resulting in 5 mL to dose. For reference: 1 US gallon=3.8 L.

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 67007294515

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4.6 ★★★★★
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Verified Purchase
Amazon Customer
Phoenix, US
★★★★★ 5
As advertised
Color: Grey Elephant
As advertised
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
A
Verified Purchase
Amazon Customer
Whiting, US
★★★★★ 5
Durable materials & highly recommended
My small dog loves this toy. It’s well made & I’d recommend it. The tail didn’t last, but it’s still worth the money.
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Reviewed in the United States on May 9, 2024
G
Verified Purchase
Gina Hyzny
Birmingham, US
★★★★★ 5
This toy won my dogs hearts.
Color: Brown & Grey
I bought the monkey and elephant for my 2 large dogs. When opening the box from amazon, one of my dogs grabbed the monkey right out of my hand and took off with it. My other big brute was not to be left out, he grabbed the elephant and went the other way. They haven’t parted with either toy since. These were able to hold up to the rough play these two knuckleheads can get going. The rope is perfect for them to hang on to. The head of the toy does have filling, although not too much. The squeaky is buried inside the stuffing. One dog did manage to rip into the head trying to get to the squeaky part. I just took out the rest of the stuffing and squeaky and this toy is still his favorite. It’s a minor inconvenience to pick up the stuffing but worth it to see him this happy. I’d recommend keeping an eye on your pet when they first receive the toy. Then you’ll be able to see if they’re able to pull it apart. It took my big dogs a bit of time to get to it, but one is a mastiff, and the other is a Shepard/husky mix. Those breeds tend to tear every toy apart with time.
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Reviewed in the United States on July 18, 2025
M
Verified Purchase
Michael Ryan
Lowell, US
★★★★★ 1
Unsafe product falls apart in chunks, choking hazard
Color: Brown & Grey
I bought these toys for my small 11 pound dog The product fell apart within a couple hours both this is it’s not meant for the description as a durable toy. It comes up in chunks and can cause choking. I returned the toys to make a point that I’m not gonna buy a product that can hold my pet and it’s unsafe for the advertise use.
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Reviewed in the United States on May 12, 2026
Verified Purchase
👎🏻
Omaha, US
★★★★★ 4
good giraffe
Color: Orange & Orange
my dogs are insane and the fox one didn’t last as long as the giraffe but it’s still holding up well after 6? months. worth my money
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Reviewed in the United States on November 20, 2025

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