Seachem Flourish Excel

Seachem Flourish Excel

Seachem Flourish Excel is a bioavailable organic carbon supplement for planted aquariums, designed for aquarists who want to support aquatic plant growth with or without CO2 injection. It introduces photosynthetic intermediates that plants can use in the carbon chain-building process of photosynthesis.

Key Benefits

• Provides a source of bioavailable organic carbon for freshwater planted aquariums.
• Can be used as an alternative to CO2 injection or alongside an existing CO2 system.
• Introduces compounds structurally similar to photosynthetic intermediates used by plants.
• May be particularly useful where adding further CO2 could result in low pH levels.
• Has iron-reducing properties that promote iron in the ferrous Fe+2 state, which is more easily utilised by plants than ferric Fe+3.

How to Use

Add directly to the aquarium water. Use when starting the product and after major water changes, then continue with regular dosing. In high-growth planted aquariums, the dose may be increased slowly.

Dosage

• Initial use or after a major water change of more than 40%: use 1 capful (5 mL) for every 40 L (10 gallons).
• Thereafter: use 1 capful for every 200 L (50 gallons) daily or every other day.
• For smaller doses, each cap thread is approximately 1 mL.

Suitable For

Planted aquariums using CO2 injection, as well as planted tanks without injected CO2. It suits aquarists maintaining low- to high-growth aquatic plant displays.

Compatibility

Seachem Flourish Excel can be used alone as an organic carbon source or in conjunction with CO2 injection.

What's Included

Seachem Flourish Excel organic carbon supplement for planted aquariums.

Frequently Asked Questions

Can I use Seachem Flourish Excel if I already inject CO2?
Yes. Flourish Excel may be used in conjunction with CO2 injection, as using one does not necessarily negate the use of the other.

How much Flourish Excel should I add after a water change?
After a major water change of more than 40%, dose 1 capful (5 mL) for every 40 L (10 gallons) of aquarium water.

How often should I dose Seachem Flourish Excel?
After the initial dose, add 1 capful for every 200 L (50 gallons) daily or every other day.

Can I measure smaller doses without using a full cap?
Yes. Each cap thread measures approximately 1 mL, helping with smaller planted aquarium doses.

Why would I use Flourish Excel instead of adding more CO2?
It provides bioavailable organic carbon and can be useful in situations where continuing to add CO2 could result in dangerously low pH levels.

When can I expect delivery?

• Gauteng (Jhb/Pta) - 1-3 working days
• Nationwide (Cpt/Dbn+) - 2-5 working days
• Outlying Areas - 3-7 working days

All orders are sent via Economy Road, typically through Fastway or Internet Express Couriers*. Estimated timeframes are not guaranteed. Once the order is collected by the courier, we have no control over third-party logistics and cannot make any time promises.

If you prefer a faster 🚀 shipping option, we also offer The Courier Guy during checkout in the dropdown selection. Please note that this option is not free, and you must choose it to use it. Please pay careful attention to the cutoff times and delivery timeframe for these options during checkout.

Enjoy the convenience of collection points and lockers! 📦

No more waiting at home or at work for your delivery. Simply choose a collection locker or pickup point and collect your order when it suits you.

Delivery times to lockers and pickup locations typically range from 2–7 working days, depending on your location.*

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Collection timeframes:

• Bob Box: Collect within 2 days of receiving your collection notification.
• PUDO Lockers: Collect within 36 hours of receiving your collection PIN or SMS notification.

If a PUDO parcel is not collected within 36 hours, it will automatically be transferred to the nearest PUDO Kiosk or Depot at no additional cost. The parcel will then be held there for approximately 2 days before being returned.

Please ensure you collect your parcel within the applicable collection period. Uncollected parcels will be returned to the sender, and additional shipping charges may apply should the order need to be resent.