Encourages fertility in your fish and lush growth in your aquarium plants. Marc Weiss Instant Amazon enhances the ability of plant microflora and microfauna to obtain nutrients and energy from water and to utilize light. Biologically discourages algae and parasites, while enhancing biological filtration. Recommended for discus, angelfish, tetras, killies, gouramis, and other rainforest fish. 16 ounces treats 960 gallons.
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