50 rock wool hydroponic planting substrate blocks, soilless substrate sowing rock wool blocks

【Packaging List】You will receive one package of hydroponic substrate containing 50 rock wool blocks, enough to grow a large number of plants and let you experience the joy of gardening. 【Premium Materials】Our rock wool blocks are a high-efficiency hydroponic product made from high-quality basalt. After being melted at high temperatures, the fibers are rapidly formed and compressed into blocks using a proprietary process. The texture is soft and uniform, with good water absorption and aeration, which is conducive to root growth. 【Instructions for Use】New rock wool blocks have a high pH value, generally 7-8, so please dilute them with water to 5.5-6, or add a suitable amount of acid and squeeze in some lemon juice to lower the pH value before use. Please wear gloves when using. 【Easy Transplanting】The planting blocks allow seeds sufficient time to establish roots. Because they are highly absorbent and breathable, you can cut them into different sizes. These seedling blocks will not corrode after soaking in water, making them easy to transplant into mesh pots or soil. Material: Rock wool Color: As shown in the picture Package contents: 50 x Seedling blocks This package only includes the above contents and does not include other products. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual product. The measurement error is +/- 1-3 cm.