🎉 Up to 70% Off Selected Items
Shop Sale
✕
Home
Shop
Cart
Account
Menu
Account
Your Cart (0)
Home
Store
PowerSI
Filters
Sort:
Latest Arrivals
PowerSI | Green Thumb Depot
NEW
Quick View
Power SI Granular Silica - Bulk Pricing / All Sizes
$53.20
NEW
Quick View
Power SI Bloom Premium Flower Additive for Superior Yields - Bulk Pricing / All Sizes
$26.91
NEW
Quick View
Power SI Original - Silicic Acid - Bulk Pricing / All Sizes
$44.22
NEW
Quick View
Power SI Power Start - All-Natural Microbial Inoculant for Enhanced Root Development and Vegetative Growth
$32.65
NEW
Quick View
Power SI PK Synergy - Advanced Microbial Consortium for Enhanced Phosphorus and Potassium Uptake During Bloom Phase
$17.58
