Product Description: Item Type: Aquarium Grass Root Fertilizer Number:40 pcs/lot Package Size:13cm/5.12"*9cm/3.54" Features: 1. The nutrients supply is stable, timely and can provide nutrients continuously without harm for water grass. 2. Nutrients are not easy to be lost and will not pollute the water. 3. Nutrients are absorbed by aquatic plants timely, and each fertilizer is coated with an organic resin which is non-ordinary resin or plastic glue coating, so it will not produce residual toxicity, will not cause water acidification or inorganic salt accumulation and is harmless to fish. The coated substances of other fertilizers are easily absorbed by aquatic plants and accumulate excessive nitrates. 4. The coating material can dissolve slowly which can provide suitable nutrients for the root when the aquatic plant needs it. The problem of algae explosion caused by the rapid release of nutrients from common fertilizers was avoided. 5. Make it easy and convenient to plant water and grass. Fertilizers can be continuously infiltrated within six months to provide the necessary nutrients for plant growth so that the plant can grow in a balanced manner. Applicable to all kinds of plants (flowers, green plants, aquarium aquatic plants, etc.). It is harmless to fish. Package Include: 1 x Aquarium Grass Root Fertilizer(bag) Notes: 1. Please allow 1-3 cm difference due to manual measurement and 3-5 g for the difference between different colors. 2. Due to the screen difference, the color may be a little different from what you expect, please allow it.