Pargro Quick Drain Jumbo Blocks, 6" x 6" x 4" (case of 36) microbes brown tips

brown tips

or stove top

Grodan Blocks - Grodan Delta blocks are the most uniform blocks available on the market

Sustained bioavailability through our formula

bulb replacements and heat are the biggest problems indoor growers face

Pargro Quick Drain Jumbo Blocks, 6" x 6" x 4" (case of 36) microbes brown tipsPargro 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