There are several different kinds; I currently have Flourish Comprehensive and Flourish Excel. This is the ingredient listing for the Comprehensive:
*Flourish™ Comprehensive Plant Supplement contains a rich assortment of important trace elements, vitamins and amino acids, formulated especially for aquatic plants in a freshwater environment. Formulas each sold separately.
Guaranteed Analysis:
Total Nitrogen.......................0.07%
Available Phosphate (P2O5)..0.01%
Soluble Potash....................0.37%
Calcium (Ca).......................0.14%
Magnesium (Mg)..................0.11%
Sulfur (S).........................0.2773%
Boron (B)...........................0.009%
Chlorine (Cl).........................1.15%
Cobalt (Co).......................0.0004%
Copper (Cu)......................0.0001%
Iron (Fe)...............................0.32%
Manganese (Mn)...............0.0118%
Molybdenum (Mo).............0.0009%
Sodium (Na).........................0.13%
Zinc (Zn)...........................0.0007%
Size: 8.5 fl oz
This is the ingredient list for Florapride:
*Tetra FloraPride nourishes aquatic plants, promotes production of chlorophyll, does not pollute the natural environmental conditions in the aquarium. Tetra FloraPride promotes the growth of aquatic plants through a combination of mineral nutrient (Potash) and trace element (Iron). This product does not contain phosphates or nitrates.
Ingredients:
Potassium Sulfate, EDTA, Iron Chloride, Sodium Hydroxide, DPTA, Ammonium Heptamolybdate, with Demineralized Water.
Guaranteed Analysis:
Soluble Potash (K2O) 3.00% Iron (Fe) 0.19% Molybdenum (Mo) 0.0005%
Size:
Net Wt. 8.45 fl. oz. (250 ml)