Vansil W-20 Wollastonite (Ca₂O₄Si), 50 lbs ingredients or laptop for maximum convenience—great

or laptop for maximum convenience—great for off-grid gardening

Blooms will be more plentiful

Wire directly to color-coded terminal blocks

This style is perfect for overlapping footprints in multiple-light configurations

it can hinder nutrient uptake by plants

Vansil W-20 Wollastonite (Ca₂O₄Si), 50 lbs ingredients or laptop for maximum convenience—greatWollastonite is a natural calcium silicate mineral. VANSIL wollastonite is sourced domestically and is not chemically treated. Because it is milled natural ore, elemental analysis can show natural minor variations. Research has shown plants supplemented with silicon have increased yields, even in prime growing conditions. Supplemental silicon strengthens plant cell walls and improves resistance to insects and disease. Silicon also stimulates plants