PVP Industries Super Coarse Horticultural Vermiculite - 4cu ft - Super Coarse no-shipping Since RAW Silica is a

Since RAW Silica is a natural form of silicon dioxide

What sets our filters apart is the premium activated carbon inside

1x Aeration screen

The result is a perfect balanced substrate for mushroom spawn to prosper and fruit

Gel strength 700-750 gm/cm2

PVP Industries Super Coarse Horticultural Vermiculite - 4cu ft - Super Coarse no-shipping Since RAW Silica is aPreferred for hydroponics and high porosity soil mixes. Horticultural vermiculite is permanent, clean, odorless, non toxic, sterile and pH neutral. It will not deteriorate, turn moldy or rot. Mixed with soil, peat, composted pine bark, fertilizers, pesticides and herbicides and promotes faster root growth and quick anchorage to young roots. Vermiculite granules attract and hold ammonium, potassium, calcium and magnesium needed for the growing plants.