$15.00 Rapidly and efficiently raises soil pH. Calcium and humates balance soil pH and stimulate microbial life. Encourages nutrient absorption. 4.5-pound bag covers 1,500ft2. Lbs Choose an option3.6Clear Mag-I-Cal quantity Add to cart SKU: N/A Category: Fertilizer and Supplies Related products 46-0-0 $47.00 Select options Green Up 12-18-8 $16.00 Select options 8-12-8 $38.00 Select options 25-0-10 Slow Release $39.00 Select options