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Root system plays a very important role in plant growth. A high-quality plant must have a developed and healthy root system. And the root growth environment can decide quality of root growth. Water, gas, temperature and fertilizer constitutes the environment for root growth together. unique structure of UPuper® rock wool substrates makes water, gas and temperature more coordinated, which can promote the roots growth, and high-quality rockwool cubes provides a comfortable environment for plants root.