







Seachem Flourish Nitrogen 500ml
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DB
Greater than one weekGood
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jessica dawn ignle
> 3 dayPlant food. 5ml = 10ppm per 10 gallons
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Growing Answers
> 3 dayI 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.
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Joe B
08-06-2025This 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.
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Joey
> 3 dayits awesome!
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Justin A.
> 3 dayCheaper than I expected and my plants looks pristine
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K&S
> 3 dayThis in my opinion is one of those unnecessary fertilizers.
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Digity Dog
07-06-2025Seachem Flourish products are superior. My tanks are looking amazing due to their regimen that I am using with their liquid fertilizers line.
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M. Morales
> 3 dayThis 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.
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jason martin
> 3 dayBig green plants