Seachem | Flourish Nitrogen

★★★★★ 5.0 75 reviews

$11.99
Price when purchased online
Free shipping Free 30-day returns

Sold and shipped by www.createch.gmbh
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here.
$11.99
Price when purchased online
Free shipping Free 30-day returns

How do you want your item?
You get 30 days free! Choose a plan at checkout.
Shipping
Arrives Jul 8
Free
Pickup
Check nearby
Delivery
Not available

Sold and shipped by www.createch.gmbh
Free 30-day returns Details

Product details

Management number 235157532 Release Date 2026/07/02 List Price $4.80 Model Number 235157532
Category
Description

Nitrogen is one of the main three macro nutrients (nitrogen, phosphorus, potassium: NPK) required by plants and can often become the limiting factor to growth in a flourishing system. Flourish Nitrogen™ is a concentrated (15,000 mg/L) blend of nitrogen sources. It provides nitrogen in both the nitrate form and the plant–preferred ammonium form. However, no free ammonia is released because the ammonium in Flourish Nitrogen™ is complexed and unavailable until utilized by the plants. Flourish Nitrogen™ also provides nitrate for those plants that can readily utilize nitrate as well. For maximum benefit, use with Flourish Phosphorus™ and Flourish Potassium™. Flourish Nitrogen™ is safe for invertebrates such as shrimp.

Directions

BEGINNER: Use 2.5 mL (half a cap) for each 160 L (40 US gallons) twice a week or as needed in response to signs of nitrogen deficiency (e.g. stunted growth, chlorosis). For smaller doses, please note that each cap thread is approximately 1 mL.

EXPERT: The beginner dose raises nitrogen by the same degree that 1 mg/L nitrate would. This dose is sufficient to provide approximately 4 g of growth (dry) or about 20 g (hydrated) over a 1 month period (assuming all other necessary nutrients are provided). For increased growth use proportionately more.

To target a specific nitrogen increase, dose according to the following formula: 0.25vn=m, where v= volume of tank in gallons, n=desired nitrogen increase (if using a “nitrate equivalent” value for “n” then use a factor of 0.05 instead of 0.25 in the formula) and m=volume of product to use in mL. For example to raise 20 gallons by 0.20 mg/L nitrogen you would use: 0.25*20*0.20=1 mL.

Because one-half of the nitrogen in Flourish Nitrogen™ is from nitrate you can get a reasonable estimate of nitrogen levels by doubling a nitrate reading.

Guaranteed Analysis
Total Nitrogen (N)
1%
Soluble Potash (K2O)
2%


Derived from: potassium nitrate, urea (iminium salt)

Sizes

100 mL, 250 mL, 500 mL, 2 L, 4 L


Correction of product information

If you notice any omissions or errors in the product information on this page, please use the correction request form below.

Correction Request Form

Customer ratings & reviews

5 out of 5
★★★★★
75 ratings | 31 reviews
How item rating is calculated
View all reviews
5 stars
90% (68)
4 stars
0% (0)
3 stars
0% (0)
2 stars
0% (0)
1 star
10% (8)
Sort by

There are currently no written reviews for this product.