Red- by Cal Aqua Labs is designed to bring out vivid colors in plants. It makes green plants vivid green, and enhances the redness in red plants. Red contains a concentrated solution of iron that is stabilized via multiple pathways. This keeps the iron in solution longer and maximizes the time for absorption by plants. It is recommended for use in planted aquariums with intense lighting, or with fast growing stem plants. Use Red when pale or yellowing of tips and younger leaves is observed. This is often found under high-light or with fast growing stem plants. Red can also be used to intensify and maintain red and green colors in fishtank plants. Add 10 ml to 100 liters of water weekly, or 1 pump to 100 liters of water daily. Dosage may be increased in high-light or densely-planted aquarium as required. Store in the dark or away from direct sunlight.