If you’ve ever needed to specifically target calcium and magnesium enhancement for your plants, you’ve probably come across this product which provides these elements in concentration. They are both critical for the plants growth cycle. GENERAL HYDROPONICS derives these from “dolomite lime and natural plant extracts.” They are specifically targeting this as their premiere product, recommended for cuttings and transplants. CaMg+ purports to be great for boosting plant metabolism and making for healthier flowers and fruits. In any RO water (Reverse Osmosis) system or soilless media where you’ve got zero calcium, it’s a great additive, and GH recommends using it in conjunction with their BioThrive product in order to balance out the nutrients, as CaMg + only handles the calcium and magnesium needs.