Seachem Flourish Nitrogen 500ml

(124 Reviews)

Price
$17.49

Quantity
(10000 available )

Total Price
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42 Ratings
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Reviews
  • DB

    Greater than one week

    Good

  • jessica dawn ignle

    > 3 day

    Plant food. 5ml = 10ppm per 10 gallons

  • Growing Answers

    > 3 day

    I use Co2 injection and have a heavily planted tank. I have checked with 2 different products and it shows I have trouble keeping nitrates in my tank. Even with all my fish in my 55G, My plants absorb nitrates so much that I have to add some with this twice a week. Half cap each time.

  • Joe B

    08-06-2025

    This product does provide nitrogen to the aquarium but be aware its not super potent: Its 1% Nitrogen - 0% Phosphorous - 2% Potassium. The actual chemical content of this is potassium nitrate and iminium salt (urea). Im of the plant keeping school that says: test your water then add back the deficient nutrients as opposed to the estimative index school (but thats a debate for another forum). To hit 10ppm of nitrogen in a 55 gallon aquarium you need about 10.4ml of this product. Id suggest you look into using dry chemical potassium nitrate. It really is cheaper, easier to work with, and does the same thing (without the name brand label & price) I bought this, but blew right though it in no time because of the low concentration. I say 4 stars out of 5 because it is pretty expensive for how little nutrient youre getting.

  • Joey

    > 3 day

    its awesome!

  • Justin A.

    > 3 day

    Cheaper than I expected and my plants looks pristine

  • K&S

    > 3 day

    This in my opinion is one of those unnecessary fertilizers.

  • Digity Dog

    07-06-2025

    Seachem Flourish products are superior. My tanks are looking amazing due to their regimen that I am using with their liquid fertilizers line.

  • M. Morales

    > 3 day

    This s the only products I trust in my fish tank. Ive been using it for years, Amazon def has it cheaper them Petco or PetSmart. Most buy for your freshwater plants helps keep them flourishing.

  • jason martin

    > 3 day

    Big green plants

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 preferred ammonium form. However, no free ammonia is released because the ammonium in flourish nitrogen is complexed and unavailable until utilized by the plants. Ammonium becomes available after conversion of urea (carbamide). 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.

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