

🌿 Elevate your planted tank game—grow greener, cleaner, and cooler!
Seachem Flourish Excel is a 250 ml liquid carbon supplement designed as an alternative or complement to CO2 injection in planted aquariums. It delivers bioavailable organic carbon that promotes healthy plant growth and helps control algae naturally. With precise dosing guidelines, it’s perfect for low-tech tanks and supports a vibrant aquatic ecosystem.

| ASIN | B001EUE6SC |
| Allergen Information | Gluten Free |
| Batteries Included | No |
| Batteries required | No |
| Best Sellers Rank | 12,455 in Pet Supplies ( See Top 100 in Pet Supplies ) 204 in Aquarium Water Treatments |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,767) |
| Date First Available | 30 Jun. 2009 |
| External Testing Certification | Não aplicável |
| Item Form | Liquid |
| Item Weight | 30 g |
| Item model number | 456 |
| Number of Items | 1 |
| Pet Type | Fish |
| Product Dimensions | 12.45 x 6.1 x 5.59 cm; 30 g |
| Quantity | 1 |
| Size | 250 ml (Pack of 1) |
| Specific Uses | Indoor |
| Volume | 250 Millilitres |
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.
A**H
You need to understand what it is and how it works...
I know lots of people rave about this stuff and others hate it, and obviously I can only speak from my own personal experience (and I don't for a second claim to be any kind of expert!), but I have been using this in my low tech, low light setup for over a year now and have seen good results. The main thing to know and understand about this product is that this is NOT liquid CO2! It gets called liquid CO2 all the time, but that's more of a casual term rather than an accurate description. (Liquid CO2 only exists at very high pressures which obviously can't exist in a soft plastic bottle) What this actually IS, is quite a potent and potentially very harmful chemical (if not dosed properly) which over the course of about 24 hours in your tank, goes through a molecular change to 'become' carbon that your plants can then utilise for further growth. (I can't pretend to know or understand the whole science involved, but there are some very informative videos on YouTube explaining this process in detail 🤓). Because its only safe to dose this in relatively small amounts it means that you're going to be limited to the amount of carbon you're going to be able to add to your system over any given period. Therefore, I've found its only really helpful when you're trying to grown relatively easy, low CO2 demanding plants rather than anything that requires high levels of CO2 (like a lot of carpeting plants for example). If that's what you want, you're gonna need to look at the high tech approach... Coupled with low lights, I've found that I'm getting good healthy slow growth of plants like anubias, amazon swords, jungle val, and bacopa. Also (with dosing it sensibly), I've not had any problems with it effecting my shrimp or snails 👍 Also, over time, this chemical acts as a very effective anti-algae additive- some people use it just for that- but that is OVER TIME! Don't over dose your tank on it trying to get rid of the stuff! (Or you'll kill everything! Not just the algae... 😵🤣) Anyway, hope this helps! ✌
E**Y
Not a miracle worker, but certainly helps with BBA
If you pair this product with weekly 50% water changes and a reduction in lighting, your plants will thank you. Saw good results in BBA reduction, going grey and dying within the first week. Stubborn, well established BBA is still there but greatly reduced. Rooted and epiphyte plants grew significantly as well even with lower light. Overall, great product to deal with a tank that has been neglected for a few weeks and needs a ‘reset’ but wouldn’t recommend as a constant addition due to the chemicals within the product being not great for aquatic life for a prolonged amount of time.
M**N
Quality product
P roduct supplied as advertised
P**L
Excellent
Excellent item, have purchased/used this particular brand many times
M**Y
Heavily covered tank with black beared algae
Simple to use. Filled bucket with water from tank, (part water change) put all ornaments plants, rocks in bucket with dose of this treatment , left for 20 mins. Spot treated using a syringe bits that couldn't be removed directly on affected area neat out of bottle. etc Cleaned tank, sides of glass. Cleaned filter, replaced carbon. Topped up tank, put all plants, ornaments back. Tank was transformed in few days, never seen ornaments as clean!, like new. The black beared alge turned reddish colour showing it had died eventually came off, fish eating it. Plants, fish unaffected. Looked amazing. Keep ontop of it now, soon as any signs retreat, change carbon , do 30%water change. Hope it helps someone else.
J**S
Great
Does exactly what it’s meant for
A**R
would buy again
did the trick just the dosage though i lost a couple of fish i put to much in
I**E
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.
I**H
Product is good but must imp is Bacteria and algae comes from this product. Make sure water will change on the 15-20 days while put time chemical on the water of aquarium.
A**S
J'utilise Seachem Flourish Excel Carbone Liquide depuis plusieurs mois maintenant pour mon aquarium planté, et je suis très satisfait des résultats obtenus. Ce produit est un excellent substitut au CO2 gazeux pour favoriser la croissance des plantes aquatiques. L'utilisation de Flourish Excel est simple : il suffit d'ajouter la dose recommandée directement dans l'aquarium chaque jour, en fonction du volume d'eau. Il est rapidement absorbé par les plantes, ce qui leur permet de réaliser la photosynthèse plus efficacement et de développer des feuilles plus saines et plus vertes. Ce que j'apprécie particulièrement avec ce produit, c'est qu'il ne favorise pas la croissance des algues comme certains autres produits contenant du carbone. Au contraire, il aide à maintenir un équilibre sain dans l'écosystème de l'aquarium en favorisant la croissance des plantes sans encourager la prolifération des algues indésirables. De plus, le conditionnement en bouteille est pratique et économique. La bouteille de 250 mL dure longtemps, même avec un aquarium de taille moyenne à grande. En résumé, Seachem Flourish Excel Carbone Liquide est un choix parfait pour les aquariophiles qui souhaitent améliorer la santé et la croissance de leurs plantes aquatiques tout en maintenant un environnement équilibré et esthétique. Je le recommande vivement pour tous ceux qui veulent maximiser la beauté de leur aquarium planté.
C**N
Não faz milagres, mas ele “mata” as algas filamentosas e peteca (claro que não é do dia para noite). Como eu apliquei: desligar filtros e qualquer outro tipo de correntezas; aplicar o Excel bem em cima das algas e deixar agir uns 5min. Após, religarmos filtros normalmente.
F**S
Perfect!!!
Trustpilot
4 days ago
2 weeks ago