Flourish®

  • Comprehensive supplement for the planted aquarium
  • Provides micro elements, trace elements and other nutrients
  • Does not contain significant levels of nitrogen or phosphorus

Flourish® is a comprehensive plant supplement for the natural freshwater aquarium. It contains a rich assortment of important micro elements, trace elements and other nutrients. These include calcium, magnesium, iron and other important elements that have been shown to be beneficial to aquatic plants. For macro element (NPK) fertilization, use Flourish® Nitrogen™, Flourish® Phosphorus™ or Flourish® Potassium™ as needed. Flourish® is safe for invertebrates such as shrimp.

Flourish® is designed to be used in conjunction with other macro and micro-nutrient supplements. Other manufacturers try to include ALL necessary nutrients, leading to overdoses of micro-nutrients in an attempt to raise macro-nutrient levels.

Sizes: 50 mL, 100 mL, 250 mL, 500 mL, 2 L, 4 L

Use 1 capful (5 mL) for each 250 L (60 US gallons) once or twice a week. For smaller doses, please note that each cap thread is approximately 1 mL. Refrigeration is recommended 3 months after opening.

Recommended Dose

mL ( caps)

Considerations: When using in conjunction with Flourish Trace™, dose on alternate days.

A: It is normal for the color of Flourish® to vary from batch to batch as this is dependent on the temperature that this product was blended at. This is of no consequence to the function of the product.

A: Per dose, per bottle, per whatever unit of weight you choose; it is expressed as percentage by weight not in absolute weights.

A: Our products are strictly intended for aquarium use and have not been tested on anything intended for human consumption.

A: I believe if you check the amount of phosphorous content (< 0.01%) you'll see that at our recommended dosing this would only add 0.0005 mg/L (ppm) of phosphate to the water. This is completely negligible and poses absolutely no risk of algae growth. So unless you are planning on a 1,000 fold overdose you don't have to worry about ever getting any measurable phosphate from using Flourish. We don't sell Flourish® as a macro element supplement which is why the phosphorous, nitrogen and potassium levels are as low as they are.

A: Yes, Flourish® is safe to use with shrimp. It is true that in large amounts, copper can be toxic to aquatic animals and invertebrates like shrimp and snails can be particularly sensitive. However, copper is needed in trace amounts by both plants and animals, including shrimp, which is why we include it in Flourish, Flourish® Trace, and our other Trace products. The amount of copper in Flourish® is so small that you would have massively overdose before you would begin to approach an amount of copper that is toxic to even the most sensitive animals. There is usually much more copper in tap water than there is in Flourish.

A: Used as directed, Flourish® will not alter pH.

Can't find what you're looking for? Ask us a new question. One of the experts from our technical support staff will be happy to promptly respond. You can also call 888‑732‑0003 (Monday- Friday 9:00 AM - 5:00 PM EST) if you would like to speak directly with a technical support representative.

Amounts per 1 g
Total Nitrogen (N) 0.007%
Available Phosphate (P2O5) 0.01%
Soluble Potash (K2O) 0.37%
Calcium (Ca) 0.14%
Magnesium (Mg) 0.11%
Sulfur (S) 0.2773%
Boron (B) 0.009%
Chlorine (Cl) 1.15%
Cobalt (Co) 0.0004%
Copper (Cu) 0.0001%
Iron (Fe) 0.32%
Manganese (Mn) 0.0118%
Molybdenum (Mo) 0.0009%
Sodium (Na) 0.13%
Zinc (Zn) 0.0007%

Derived from: Potassium Chloride, Calcium Chloride, Copper Sulfate, Magnesium Chloride, Ferrous Gluconate, Cobalt Sulfate, Magnesium Sulfate, Manganese Sulfate, Boric Acid, Sodium Molybdate, Zinc Sulfate, Protein Hydrolysates

Download Safety Data Sheet (SDS)

Aquarium Use Only! Keep Away from Children! Contains 1,5-pentanedial. May produce an allergic reaction.

0514 Flourish 50 mL
0515 Flourish 100 mL
0516 Flourish 250 mL
0513 Flourish 500 mL
0518 Flourish 2 L
0519 Flourish 4 L