Seachem Flourish Excel - 500 ml Product information: - Size: 500 ml - Product Dimensions : 12.45 x 6.1 x 5.59 cm 249.48 Grams Safety Information: - Do not eat drink or get into eyes. In case of eye exposure, promptly thoroughly wash eyes with water seek medical attention. Directions: - On initial use or after a major and gt 40 water change, use 1 capful 5 mL for every 40 L 10 US gallons . Thereafter use 1 capful for every 200 L 50 US gallons daily or every other day. For smaller dosing please note that each cap thread is approximately 1 mL. Contents in Box: - 1 x Flourish Excel 500 ml More information about product: - AM-SEACHEM-FLOURISH-EXCEL-500ML-1PC - 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. 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 include 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...