Seachem Flourish Complete Planted Tank Fertilizer

    Seachem Flourish


    Seachem Flourish is a comprehensive supplement for the planted aquarium providing minor & major minerals for an improved growth of freshwater plants and marine macroalgae for an improved nutrients export. It contains traces of nitrate, phosphate and copper as it is designed for freshwater tanks. Although Flourish is often used as well in the marine aquarium we recommend more a specialised fertiliser for those like Brightwell's ChaetoGro or Continuum's Basis Chaeto Grow.



    Seachem Flourish® Aquarium Plant Food for the Planted Aquarium 100ml / 250ml / 500ml

    Seachem Flourish Comprehensive supplement for the planted aquarium is a great choice when it comes to successful growing plants in a freshwater aquarium & macroalgae in a planted reef tank. It is designed for the freshwater aquarium as it includes copper. In the  marine aquarium it should be taken with caution, as it includes a small amount of copper, although much less than most other fertilizer for the planted aquarium.

    It won't add significant levels of Nitrate & Phosphate and is therefore a great solution for lowering Nitrate & Phosphate levels in the aquarium water.

    Instruction Guidelines

    • Shake Seachem Flourish well before using.
    • Dosing recommendation:
      Use 1 capful (5 mL) for each 250 L once or twice a week. For smaller doses each cap thread is approximately 1 mL. Refrigeration after opening is recommended but not required.
    • For strong algae growth it is recommended to maintain a minimum Nitrate level of 3-5 ppm and phosphate level of 0.01 ppm, as otherwise an optimum macroalgae growth may not be possible.
    • Concentrated formula & integrated measuring bottle - 500 ml will treat 5000 litres of tank water
    • Contains  0.0001% Copper *1


    Keep out of reach of children. Not for human consumption. Handle with care in the aquarium.

    *1 =  Please note that Copper can be toxic to aquatic animals and invertebrates like shrimp and snails as they are particularly sensitive. However, copper is needed in trace amounts by both plants and animals which is why Seachem includes it in Flourish and other of their trace products. The amount of copper in Flourish® is so small that a massive overdose would be necessary before it would begin to reach an amount of Copper that is toxic to even the most sensitive animals. This said when using this fertiliser we recommend for safety reasons to monitor the Copper level in the aquarium water and to use if necessary Copper removing supplements.     

    Nitrogen (N)0.07%, 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%

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



    We want you to be fully happy with your new macroalgae addition. Therefore we offer you a hassle free Satisfaction Guarantee.  

    If you are not 100%  happy with the macroalgae you have received on arrival we will refund you the full money back.    *1
    We even will cover the return costs. The refund will be offered after we arrived and checked the returned marine algae.

    *1 = Valid for UK Orders only, please see our Terms for EU orders HERE 


    We offer for sale macroalgae from our mature macroalgae mother colonies in a premium quality & 100% healthy within the UK and EU.
    All live algae species are sustainably grown in the UK.

    All macroalgae will be well protected when posted to you to ensure that it will arrive in the best condition at yours.


    We won't be beaten on the premium quality of our live algae cultures, and surely not on the price either!

    Have you seen the same macroalgae somewhere else cheaper?

    Please just send us a message HERE and we will check your request within 24 hours ( working days only ).

    When we can match the other price we will send you a discounted offer which will be valid for the next 7 days after receiving our email.
    This offer will be just valid for purchases using the same email address provided before.

    The price match offer is only valid for identical, same size/amount and available macroalgae species.
    As a proud UK based tax paying business, we don't price match any offers against auction sites or from private sellers.

    The price match offer is just valid for UK deliveries. We reserve the right to refuse a price match request.

    If you have any questions please don't hesitate to contact us.

    Your Livealgae UK

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