Advanced Nutrients Sensi Cal Mag Xtra - 250mL ph-adjusters 1 x AAA battery included

1 x AAA battery included with each pen

This was proven beyond doubt by Dr H

convenient 2 ounce bottle

it is recommended to use the top booster in conjunction with House & Garden Bud XL

Advanced Nutrients Sensi Cal Mag Xtra - 250mL ph-adjusters 1 x AAA battery includedIntroducing Advanced Nutrients Sensi Cal Mag Xtra SENSI CAL MAG XTRA Feed Your Crops the Extra Calcium, Magnesium, and Iron They Need, just like all forms of life, including human beings require a complete range of essential elements in order to thrive. Not one can be lacking, or your crops may suffer nutrient deficiencies. With a robust menu of calcium, magnesium, iron, and vitamins, Sensi Cal Mag Xtra eliminates any guesswork in diagnosing shortages