Flourish Excel a bioavailable organic carbon source for the planted aquarium

Use as an alternative to CO2 injection or in addition to it

Introduces photosynthetic intermediates

What is Flourish Excel?

When building a planted aquarium a decision must be made on whether to go “high tech” or “low tech” when it comes to the infusion of CO2 gas into the water. If you go “Low tech” wouldn’t it be good to have a compromise between an “all-in” CO2 system and a slow growth set up? Well this is where Flourish Excel come in.

Flourish ExcelOne of the first things young children are taught at school in science is that animals breathe Oxygen and exhale CO2, while plants take in CO2 during the day and release Oxygen. This is called photosynthesis, where plants use the energy in sunlight to convert Co2 and water to sugar and Oxygen. The more CO2 in the air means the more plant growth there is!

The Aquascape

Flourish Excel is an additive for aquascape aquariums that you can use as an alternative to CO2 injection. You simply add the Flourish Excel liquid each day to your tank which ensures it becomes the carbon source for your plants. We don’t claim that Flourish Excel can create the same growth rate as using CO2 but it is a great option at a fraction of the cost. All you need is a little patience! If you already using a CO2 unit adding flourish excel to your aquarium could give you a big benefit. It can be really useful for situations when continuing to add CO2 might result in very high pH levels.

An additional benefit of Flourish Excel is its iron reducing properties. This actually ensures the ferrous state of iron is enhanced and makes the Iron more easily utilised than ferric iron (Iron can exist in a number of different energy states but basically it occurs most frequently as Fe3+ (ferric). Fe3+ is useless to plants however as they simply can’t absorb it> Plants need iron expressed as Fe2+ (ferrous)


On initial use or after a major (> 40%) water change, use 1 capful (5 mL) for every 40 L . After use 1 capful for every 200 L  daily or every other day. For smaller dosing please note that each cap thread is approximately 1 mL.


CAUTION: Do not eat, drink or get into eyes. In case of eye exposure, promptly & thoroughly wash eyes with water & seek medical attention.

Additional information


50ml, 100ml, 250ml, 500ml, 2L, 4L


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