Aquarium Pharm - Pure Laterite - 55 Oz

First Layer Pure Laterite Is An Excellent Planting Medium For Rooted Plants. This Can Be Used When Starting A New Aquarium Or Added To An Established Aquarium To Supply Potassium, Magnesium, Iron And Sulfur, All Of Which Plants Readily Absorb Through Their Roots. Made Of 100% Natural Laterite Clay, Provided In A Convenient Granular Form. Mix With Aquarium Gravel To Create An Ideal Planting Medium.