Pargro Quick Drain Jumbo Blocks, 6" x 6" x 4" (case of 36) HPS These products aren't just "containers"

These products aren't just "containers" but rather root production tools

Unlike broad-coverage fixtures that waste light on walls and floors

Inoculates the root zone with large and diverse microbial communities

Our Xtrasun High Pressure Sodium (HPS) lamps are engineered specifically for use with both magnetic and electronic ballasts

Pargro Quick Drain Jumbo Blocks, 6" x 6" x 4" (case of 36) HPS These products aren't just "containers"Pargro is the leader among affordable horticultural rockwool. Made right in the Grodan factory, so you can be assured of a high quality product at a great price. Drainage Driest value priced rockwool on the market 14% drier than competitor blocks Value Value pricedno frills saves you money Half case sizes in plain boxes Quality Cheap in price, but not in strength and uniformity Made under quality control at Grodan factories