Fertilizers and CO2 supplements are essential for promoting healthy, vibrant plant growth in aquariums. These products provide vital nutrients that plants need to thrive, such as nitrogen, phosphorus, and potassium, as well as trace elements like iron and magnesium. CO2 systems enhance photosynthesis, leading to lush, green foliage and robust plant health. Whether you’re cultivating a densely planted aquascape or just adding a few plants, fertilizers and CO2 can significantly boost their growth and vitality.