| Size | 18 Ounces (Dry) |
|---|---|
| Brand | GS Plant Foods |
Check the listing for details. Cal-Mag Extreme. Condition: New. Listed at 24.95 USD. GS Plant Foods Cal Mag 420 Dry Super Concentrate is our Dry, powdered version. Your all-in-one solution for robust plant health and unstoppable growth! With just ¼ teaspoon per gallon, one 18-ounce jar makes 420 gallons of nutrient-rich solution, perfect for soil, hydroponics, coco coir, and container gardens.
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