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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Joe p.
Omaha, US
★★★★★ 5
Good plates
Color: Pathways Design, Size: 10 in
Good plates. No issues
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Reviewed in the United States on May 2, 2026
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Waukegan, US
★★★★★ 4
Good quality, but too expensive.
Color: Pathways Design, Size: 10 in
Very good quality. Sturdy. Holds up with heavy, hot food. Food doesn't soak through. The only reason I took off one star is the cost. Way too expensive for paper plates.
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Reviewed in the United States on August 7, 2025
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Leon
Phoenix, US
★★★★★ 5
Good buy
Color: Pathways Design, Size: 10 in
Very very strong and sturdy
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Reviewed in the United States on February 17, 2026
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April
Omaha, US
★★★★★ 5
Great price
Color: Pathways Design, Size: 10 in
Perfect size & love the price for what we get!
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Reviewed in the United States on February 14, 2026
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kaitlin barfuss
Birmingham, US
★★★★★ 5
Great small soup bowls!
I bought these for a family party for soup. I was nervous they were going to be flimsy and cheap. I was pleasantly surprised how thick and sturdy they are! They were a perfect size for a smaller bowl of soup or chili. We even used them in the microwave for left overs and they held up great! There was no sagging or getting soggy which I was also worried about. They are definitely good quality. They are much better than the Walmart or cheap off brands. I also loved the price. I thought they were a great deal for the quality and quantity. The only con I had was some were hard to pull apart. It was no big deal though. I will definitely buy them again.
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Reviewed in the United States on November 4, 2025

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