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🌱 Elevate your aquatic garden—because thriving plants don’t wait!
Seachem Flourish Excel is a scientifically formulated liquid carbon supplement providing bioavailable organic carbon and iron in its most plant-accessible form. Designed for freshwater aquariums, it supports robust plant growth, enhances photosynthesis efficiency, and helps control black beard algae safely without harming fish or invertebrates. Trusted by hobbyists for over three decades, this 100 mL treatment offers precise dosing for all tank sizes, making it an essential tool for professional and passionate aquascapers alike.

| ASIN | B0002A5WQU |
| Allergen Information | Abalone Free |
| Best Sellers Rank | #53,133 in Pet Supplies ( See Top 100 in Pet Supplies ) #503 in Aquarium Water Treatments |
| Brand | Seachem |
| Brand Name | Seachem |
| Customer Reviews | 4.5 out of 5 stars 511 Reviews |
| Global Trade Identification Number | 00000116045506 |
| Included Components | Flourish Excel, 100 mL / 3.4 fl. oz. |
| Item Form | Liquid |
| Item Type Name | Aquarium Conditioner |
| Item Weight | 100 Grams |
| Liquid Volume | 100 Milliliters |
| Manufacturer | Seachem Laboratories, Inc. |
| Manufacturer Part Number | 455 |
| Model Number | 455 |
| Number of Packs | 1 |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 000116045506 |
| Unit Count | 1 Count |
I**E
Black Beard Algae Destroyer!
This stuff is amazing. I had a nasty case of black beard algae all over my live plants and decor. The aquarium contains a betta, a few corydoras, several tetras, a couple mystery snails, a couple nerite snails and a bunch of neo shrimp. If you've ever had black beard algae you understand just how quickly this stuff can spread and take over your aquarium. I started using Flourish Excel along with an iron/potassium supplement and the black beard algae is almost gone after just a couple weeks. Amazing! And best of all it didn't kill or harm any of the creatures or plants in my tank, in fact, the plants look healthier, the water smells cleaner and the shrimp seem happier and more active than ever before while keeping my plants and substrate clean.
L**.
Plants love it! Black beard algae hates it!
I bought this to kill off the black beard algae (BBA) in my tank. The added benefit is that my plants LOVE the extra nutrients (which is probably why I had BBA in the first place...) Anyway, if you're treating for BBA, be sure to turn off all filtration, pumps, and airstones first, then use a 1 mL syringe to dose on top of the BBA, wait 10 min, then turn back on your pumps etc. If you try treating the BBA when there's water movement, it's no where near as effective. I treat the BBA with the recommended dose about once every 1-2 days in my 20 gallon (and reduce the time my light is on from 10 hours to 7 hours), and I see a massive improvement. DON'T OVERDOSE when treating the algae. Just use the recommended amount and treat small sections at a time. Algae will turn red when dead, and you're algae eaters will take care of the rest.
C**S
Works great
Took care of the algae problem in my small tabk. Use as directed!
G**A
Be Careful
Buyer Beware! DO NOT BUY FROM FAT HAPPY PETS!!! I bought this from this seller, the safety seal was not intact. I found it loose on top of the container when I opened the lid. The lid was also taped shut. So far my plants look good, not sure if it is this product or their flourite dirt. I have never bought this item before so I am unsure if I got the real thing. It has a smell but is clear and looks like water. I put my hand in the tank and I have no skin reactions. I know other reviewers have said this can irritate the skin. I recommend getting a syringe to dose this product, I have a 5 gallon tank so getting .5mL with a syringe is the only option for me.
O**Z
Kills algae!
This is killing my hair algae. I love it.
K**E
Rapid growth.
Works incredibly well.
M**Z
Muy bueno para el ecosistema
El abono y antialga
C**.
Arrived half empty and spilled on the other items shipped with it.
I think the product or what is left of the half empty bottle is going to work alright. I'm not going to reorder, it took weeks to ship because of covid19.
T**X
Essential
A must in my opinion for any aquarium enthusiast with a planted tank. This provides some necessary nutrition for water borne plants and helps with healthy growth. Since using my plants have been flourishing and lots of healthy growth which means happy fish. Lasts quite a while for me as only have a small tank. As the plants flourish they compete with algae for nutrients and then causes algae to decline.
P**S
Top quality
Alta qualità ed affidabilità, leggete con attenzione i dosaggio nell'etichetta, non esagerate!
S**K
Poor
Very poor quality breakage your item.
G**S
Buen producto
Marca recomendada
J**Y
Product as described.
Great product for the aquarium plants,just after using this for three days you can see in photo how well the plants are doing.
Trustpilot
2 months ago
4 days ago