Cal-Mag Plus is fortified with a proprietary blend of select trace minerals to help maximize yields in fruiting and flowering plant varieties, prevent blossom end rot in tomatoes and peppers, and reduce tip burn in lettuce.

The best time for using Cal-Mag is within the daytime or after the lights activate because, during the day, the movement of water is quicker than that of the night.

However, excess levels of calcium in the soil can affect a plant's uptake of other nutrients. This can cause a deficiency in these vital elements. For example, too much calcium in the oil can make it harder for plants to absorb magnesium, potassium, phosphorus, copper, zinc, iron, and boron.