The 20 balls are pressed fertilizing pellets, enriched by a special process with all the nutrients vital for aquatic plants, especially iron and trace elements.

The nutrients are released slowly, providing a very favourable depot effect. The ball shape permits the convenient use in existing freshwater aquariums.

Specially suitable for the specific nutrient supply or post-fertilization of aquatic plants which mainly absorb their nutrients through the roots, such as echinodori, cryptocorynae and others.

Also have listing for 7 balls for $8.95

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