For over 25 years, Microp has been used by growers to amend problem soils and supply free nitrogen from the air. These tiny blue-green algae add organic matter and stimulate beneficials. There is nothing else like Microp! Mix this concentrated powder in your hose-end sprayer or watering can and use in all your lawn and garden areas. No more fading between fertilizer applications. Dosage: 1/2 lb. per 15,000 sq. ft. or one teaspoon per gallon of water. Microp- 8 oz. Jar Regular price: $12.95 Sale price: Microp-5 lbs. Bucket Regular price: $89.95 Sale price: Microp 4XL - 10 oz. Jar (20x concentrate covers 10 acres) Microp 4XL - 5 lbs. Bucket (20x concentrate covers 80 acres) Customer Letters