Natural Sulfate of Potash-Magnesia (2MgSO4 • K2SO4), commonly referred to as Sul-Po-Mag or K-Mag (these are brand names), is a natural mineral salt, called langbeinite, and typically contains 22 percent potash, 11 percent magnesium and 23 percent sulfur. Like sulfate of potash, langbeinite is slowly soluble but is an acceptable material to use in the production of certified organic crops and the practice of organic land care.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Refund Policy
How do I return an item?
Please contact customer service for more information on returning an item. Thank you.
You may also like
Recently viewed
Commercial Pricing Available
We have been the supplier of choice for numerous commercial hydroponic and agricultural operations for decades. For more info call 404-367-0052
Discreet Delivery Available to all 50 states
All packages are always discreet packaged. Learn more about our shipping policies here
Top-Notch Support
We pride ourselves on our excellent customer service and wealth of knowledge on hydroponics and indoor agricultural best practices
Secure Payments
We do not store customer credit card information and do not sell your personal information to third parties. Click here for more information
