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4 Litre Seachem Flourish Excel

Quick Overview

SeaChem Flourish Excel is a source of bioavailable organic carbon...

Availability: In stock ready for dispatch

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SeaChem Flourish Excel is a source of bioavailable organic carbon.

All plants require a source of carbon. This is typically obtained from CO2, but, may also be derived from simple organic compounds (such as photosynthetic intermediates). Therefore, one can derive a substantial benefit with the use of Flourish Excel either alone or in conjunction with CO2 injection.

Flourish Excel also has iron reducing properties which promote the ferrous state of iron (Fe+2), which is more easily utilized by plants than ferric iron (Fe+3).

A very popular product with our keen plant growers!


On initial use or after a major (>40%) water change, use 1 capful (5ml) for every 40L (10 Gallons).

Thereafter use 1 capful for every 200L (50 Gallons) daily or every other day. Dosing may be slowly increased in high-growth aquariums. For smaller dosing please note that each cap thread is approximately 1 mL.

Do not overdose.

500ml treats 400L (100 Gallons) for 1-2 months.

Additional Information

MPN 20990
Barcode 000116045902
Brand Seachem

Customer Reviews

3 Item(s)

per page
Item as described, fast dispatch, highly recommended seller 10/10 Review by Ian Bannister
Not tried it yet (Posted on 10/08/2015)
Excellent delivery very quick. Review by Malcolm Waters
Been using this product to improve my plants for ages now so decided to buy in bulk to save money. (Posted on 11/04/2015)
Fantatsic product! Review by Stuart
I bought a small 500ml version of this and saw a massive improvment in my plant growth and water quality, so have now bought the larger bottle as it is very well priced! would highly reccomend this product to anyone who doesnt want or afford a co2 setup. brilliant product! (Posted on 07/08/2014)

3 Item(s)

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Postage Information

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Add the items you would like to purchase to the shopping cart and then head to the checkout cart. Here you can pop your postcode into the form and it will automatically calculate for you delivery options and cost.


Orders over £30 are Delivered FREE!

Providing none of the items in your order require pallet delivery or are excluded from delivery promotions, we will give you free standard delivery. You can still upgrade this service if you wish, and will only pay the difference.


Pallet Deliveries are different.

For items that have to be sent by insured pallet or other special delivery, these are excluded from the standard delivery offer and instead follow a different system. Pallet deliveries are split into 2 tiers: tier 1 and tier 2. Pallet deliveries take 2-4 working days and cannot be tracked.


For pallet deliveries we will contact you to confirm the delivery address and delivery day before releasing the order.


Please note that the pallet delivery service is a drop at kerb only service, the drivers are not insured to handle goods into homes and you are required to dispose of the pallet.


Pallet Tier 1

This tier is for solo tanks and cabinets, or other solo high weight products that we can't send by a normal courier. We subsidies the majority of the true delivery cost for these items to offer the best value we can. The shipping cost for these is calculated at checkout.


Pallet Tier 2

New for 2020! We are proud to announce we now offer FREE mainland UK pallet deliveries for Pallet Tier 2. Pallet Tier 2 is for the larger full tank and cabinet sets, such as the beautiful Juwel Rio, Lido, Trigon and Vision ranges.

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