"Over$tock $ale! Hurry!!" A spot on product that treats the plants not the water. Mardel® BioSpheres Plant Nutrient contains chelated iron, a form of iron that is rapidly utilized by plants. The microscopic biospheres attach directly to the plants delivering the nutrients to where they are needed. It will help new plants get a vigorous start and keep established ones flourishing. Great for all freshwater plants. Shipping-Weight: 0.7 lb |