Can coarse sand replace vermiculite?
Depending on what you do, vermiculite can absorb water, nutrients are not easy to drain, and lighter than sand
Can not replace. Only the air permeable function of river sand, vermiculite, but in addition to this function, but also has strong cation exchange ability, can be applied in the adsorption of nitrogen and phosphorus and potassium fertilizer, avoid loss; and vermiculite itself also contains calcium and magnesium elements, can slowly release the nutrients.
Sand can replace the vermiculite, but thick enough, at least in mung bean.
