Made from specially processed natural materials from the earth, rich in organic matter, humic acid, and mineral trace elements, it is the ideal naturalistic planting aquarium substrate for most aquatic plants. Explicitly developed for aquatic plant cultivation, the nutrient composition is infinitely close to the original watershed aquatic plant substrate nutrients, making it easier for aquatic plants to absorb and promoting the health and growth of the shrimp layer. Innovative wrapping and slow release technology so that sufficient nutrients can be released evenly and lastingly to provide nutrients for aquatic plants continuously; advanced firing process, exquisite processing technology, so that Landen's oceanic plant mud retains nutrients while maintaining the granular state underwater for a long time, not easy to pulverize, and can be rebuilt tank many times. All-round upgrades to restore the natural water state to the greatest extent, to keep the water body transparent and clear. It also effectively reduces the hardness and PH value of water, suitable for weakly acidic aquatic plants, so they can absorb nutrients and grow comfortably. The irregular particle shape of this product recreates the natural landscape and simulates the original watershed tank substrate. Its porous structure creates an attractive and stable breeding ground for beneficial bacteria, keeping your aquarium water clean. The rich nutrients also effectively solve problems such as slow growth of aquatic plants, yellowing of aquatic plants, leaf curling, maximum shrinkage, and bleaching. In terms of size, we recommend fine marine mud, suitable for laying on the surface layer, with fine particles and high friction, ideal for prospective planting, and easy for aquatic plants to take root. Coarse oceanic grass mud, laid under the fine particle of marine grass mud, with larger particles, easy to accumulate, and compound fertility, is the substrate for aquatic grass planting.