SKU: 59683229540

Seachem Flourish Excel Plant Carbon Co2 Alternative 250/500ml

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Description

Seachem Flourish Excel Plant Carbon Co2 Alternative 250/500mlSeachem Flourish Excel Plant Carbon Co2 Alternative 250 500ml 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. The use of either CO2 injection or Flourish Excel does not necessarily negate the use of the other, because the processes of producing photosynthetic

Seachem Flourish Excel Plant Carbon Co2 Alternative 250/500ml

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. The use of either CO2 injection or Flourish Excel does not necessarily negate the use of the other, because the processes of producing photosynthetic intermediates and building onto them occur simultaneously, one can derive a substantial benefit with the use of Flourish Excel either alone or in conjunction with CO2 . The combination is particularly ideal for situations when continuing to add CO2 could result in dangerously low pH levels. Seachem 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).

The reason plants need CO2 is to produce longer chain carbon compounds also known as photosynthetic intermediates. Photosynthetic intermediates includes compounds such as ribulose 1,5-bisphosphate, and 2-carboxy-3-keto-D-arabinitol 1,5 bisphosphate. Although the names are complicated, the structures are quite simple (5 carbon chains). Flourish Excel does not contain these specific compounds per se, but one that is quite similar. By dosing with Flourish Excel you bypass the involvement of CO2 and introduce the already finished, structurally similar compounds. It is in its structural similarity that Flourish Excel is able to be utilized in the carbon chain building process of photosynthesis. Simple chemical or enzymatic steps can easily convert it to any one to any one of the above named compounds (or a variety of others).

Bottle sizes available...
250ml treats 10000L
500ml treats 20000L

  • Bioavailable organic carbon source for the planted aquarium
  • Use as an alternative to CO2 injection or in addition to it
  • Introduces photosynthetic intermediates
  • Easy to use
  • Available sizes; 250ml & 500ml

    Directions...
    On initial use or after a major (> 40%) water change, use 1 capful 5ml for every 40L. Thereafter use 1 capful for every 200L daily or every other day. For smaller dosing please note that each cap thread is approximately 1ml.

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Exchange/Return Notes
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SKU: 59683229540

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4.8 ★★★★★
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margie stephens
Alexandria, US
★★★★★ 5
God quality and dogs love 'em
Size: 5 Pack
Great not to have stuffing all over my house. I only have 2 out of 6 dogs who will play with toys and they thoroughly enjoy them they play tug a war and then fuss when trying to steal one from.other dog these are well made and lat a long time they are also washable
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Reviewed in the United States on May 20, 2026
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Dorey Marshall
Lowell, US
★★★★★ 3
Not very durable
Size: 5 Pack
They’re a great toy for the dog. However, if the dog is bigger, they are very easily destroyed.
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Reviewed in the United States on May 9, 2026
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Malauraashley
Battle Creek, US
★★★★★ 5
Bought these multiple times!
Size: 5 Pack
These are among the few toys my dogs don’t rip apart in seconds! Eventually, Bailey (my oldest) does manage to rip out the squeaker, but it takes her way longer than any other toy I’ve ever bought. Both of my dachshunds absolutely love to squeak it. I have bought these a few times over the last few years and will definitely keep buying them!
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Reviewed in the United States on May 24, 2026
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Ladybug27
Dallas, US
★★★★★ 5
Best Balls Ever!!!
Size: Medium
These are the best balls ever! We have 2 very active ball loving dogs and these bounce very well and they actually hold up with active play and chewing. They still look brand new after daily use for months!
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Reviewed in the United States on May 15, 2026
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David
Draper, US
★★★★★ 5
Finally a ball my power chewers cannot destroy
Size: Medium
I have two dogs, an American Bully and an American Pit Bull Terrier, and both of them love to chew. Most balls last a very short time around here before they are shredded or missing big chunks. This one has actually held up. They chase it, tug on it and sit and chew on it, and it is still in one piece with no pieces breaking off. One of my favorite things is being able to put food inside. I add some kibble or small snacks, and they will happily sit and work on it for a long time. It keeps them busy, gives them something safe to chew, and they get a little reward while they play. When they are done, I just rinse it out and it is ready to go again. If you have strong jawed dogs that usually destroy toys, this ball is worth trying. Mine really enjoy it and I feel better knowing they finally have a ball that can keep up with them.
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Reviewed in the United States on November 22, 2025

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