Jack's Professional Boost Epsom Salt (Magnesium Sulfate), 25 lbs. Bloom Spectrum LED Grow Lights The Zephyr 1 Day/Night Temperature

The Zephyr 1 Day/Night Temperature Controller is something every gardener should have tending their indoor garden

4220 (H) 14

Incorporate naturally occurring trace minerals providing an essential & complete minors mineral package

Medium is multi-washed

Jack's Professional Boost Epsom Salt (Magnesium Sulfate), 25 lbs. Bloom Spectrum LED Grow Lights The Zephyr 1 Day/Night TemperatureJack's Professional Magnesium Sulfate is part of the BOOST line of products and is an essential item for the Jack's 3 2 1 program. This nutrient supplement is backed by scientific research and quality testing. The Mg + S (magnesium and sulfur) in Jack's Nutrients Epsom Salts undergoes extensive quality testing to ensure the lowest possible levels of heavy metals. You can have confidence that when you add a boost of Mg + S, you are getting pure