Botanicare Cal-Mag Plus is a powerful calcium and magnesium fertilizer that helps to promote healthy foliage and root systems. This fertilizer provides your plants with the essential nutrients they need to thrive, improving nutrient uptake and yielding better crops. Cal-Mag Plus is suitable for use with soil and hydroponic systems, and comes in a 5 gallon size. With an optimal ratio of calcium and magnesium, plus chelated iron and other important plant nutrients, your plants will benefit from improved growth and increased yields. Get the perfect balance of calcium and magnesium for your plants with Botanicare Cal-Mag Plus!