Supplements for Healthy Planted Aquariums: Seachem Flourish Excel
Email Sign-Up Go to Shopping Cart (0)



Seachem Flourish™ Excel

Seachem Flourish™ Excel
| view larger image |
As low as $7.10
Auto Delivery!*
Quantity Discount Available:
: each
  • 250 ml $7.10
  • 500 ml $10.33
  • 2 liters Was: $34.75 Now: $32.99


Add to Cart
Want to know if we drop the price on this item?
SIGN UP for an easy email alert! What are Email Alerts? Learn here.
You may end alerts at any time. | Manage alerts

Frequently Asked Questions

Q.  Is Flourish Excel a replacement for CO2 in a planted aquarium?
A.  Yes and no. It provides the same benefit as CO2, i.e. it provides the plants with a source of carbon for growth just as CO2 provides them with carbon. However CO2 by itself will give you quantitatively more growth than Excel by itself, although Excel does provide a substantial amount in comparison. If CO2 is a 10, Excel is a 6-7. Using both together provides additional benefit. One of the advantages of the Excel is no up front equipment costs and complexity of valves, hoses and regulators, etc.

Q.  Is it better to add Flourish Excel at night or in the morning based upon plant carbon uptake physiology?
A.  Carbon intake is a function of photosynthesis. Based on this, it would be ideal to dose Flourish Excel during the day. But given that Flourish Excel can stay complexed as a carbon source for up to 24 hours before it dissipates, you can dose at any time of the day and the product will be available for the next 24 hours. Flourish Excel is not carbon dioxide and there is no impact on pH using Flourish Excel.

Q.  Will an airstone or surface agitation decrease the effectiveness of Excel as it would decrease the effectiveness of CO2 injection? What effect would it have on Excel?
A.  An airstone or other surface agitation will not impact the effectiveness of Flourish Excel. Flourish Excel is not CO2, it is simply a readily available source of carbon. This is an intermediate source and more readily available than CO2 and will not interfere with the uptake of CO2 as a carbon source.

Q.  Is Flourish Excel safe for fish?
A.  Yes, when used as directed, Flourish Excel is completely safe for fish.

Q.  I've been using Flourish Excel for four days, and I've noticed that my Anacharis seems to be dying, while my other plants are doing fine. Why is this?
A.  Anacharis is a particularly sensitive species (known to be sensitive to high temperature, trace copper, formaldehyde etc.). It is also sensitive to Flourish Excel. If you have Anacharis in an aquarium in which you are dosing Flourish Excel we recommend using Flourish Excel every other day rather than daily.

Customers Reviews

Questions & Answers

Drs Foster and Smith Articles

Discover the Natural Beauty of Planted Aquariums
Re-create a unique and natural aquatic ecosystem indoors by adding a planted aquarium to your home. Planted, aquariums contain live underwater plants (and fish, if you'd like), which closely replicate the beautiful, relaxing environment.
Tips for a Successful Planted Aquarium
Anyone who has seen a photograph of a lush, verdant setup with a school of jewel-like tetras knows the beauty of a freshwater planted aquarium. Many hobbyists avoid adding live plants, believing they are too fragile or too difficult to keep.
Caring for a Live Plant Aquarium
Featuring live plants in your aquarium not only makes it more attractive, but is much healthier for your aquarium's inhabitants. Learn how to care for freshwater planted aquariums.
See All Articles

Contact us
8 am - 8 pm CST
7 days a week

7 am-8 pm, CST
7 days a week