Seachem Flourish Excel, 2L

Organic carbon for the planted aquarium; CAUTION: Do not eat drink or get into eyes. In case of eye exposure, promptly & thoroughly wash eyes with water & seek medical attention.
Flourish Excel is a source of bioavailable organic carbon
Contains a photosynthetic intermediate that can be used in combination or in the absence of CO2 injection
250 milliliters treats 50 US gallons for 1 to 2 months