Sensi Cal-Mag Xtra is a new & improved version of classic Sensi Cal Mag because it contains a complete set of micronutrients including the correct amounts of iron as well as 20 L-form amino acids to ensure the potential of every nutrient in Sensi Cal-Mag Xtra is performing at maximum potential. Every last detail has been accounted for to make this product as perfect as scientifically possible. It’s different from the competition in that no other hydroponic company has had the opportunity or the brave enough leadership to scientifically test cannabis in the volume Advanced Nutrients has. And as always we back up our promises to you the grower with our world-famous Grower Guarantee. In short you either love Sensi Cal-Mag Xtra or you get your money back. It’s that simple and you risk nothing by trying the latest in cal-mag supplement science. Visit your local hydroponics dealer and ask for Sensi Cal-Mag Xtra by Advanced Nutrients today.