Naturally aged Coco Coir bricks are sized 1/3 cu ft each and are individually wrapped. Each brick weighs about 1.37 lb and measures roughly 5 x 10 x 20 cm (2 x 4 x 8 in). This soilless media can be used by itself or mixed with other media to improve soil compaction and water retention. Itβs versatile for hydroponics, baskets, and other growing setups, and it derives from coconuts. It arrives naturally aged and ready for water, and it is lightweight for easy handling in baskets and containers. A 10-pack yields media for about 30 shallow 1020 trays, while one brick covers about three shallow trays. π Product summary: 1 brick = 1/3 cu ft; weight ~1.37 lb (625 g). Dimensions: roughly 5 x 10 x 20 cm (2 x 4 x 8 in). Naturally aged and ready for water upon arrival. Soilless media with high water retention; lightweight for baskets and containers. 10 bricks per pack; ~30 shallow 1020 trays; 1 brick covers ~3 trays. pH 5.4β6.8; EC up to 250 Β΅S/cm; CEC 60β130 meq/100 g. Total Organic Matter 94β98%; Organic Carbon 45β50%; Ash 3β6%. Water holding capacity 8β9x; Air filled porosity 10β12%; Total pore space 94β96%. pH 5.4 - 6.8 Ash (dry basis %) 3 - 6 Electrical conductivity (uS/cm) max 250 Cationic exchange capacity (meq/100g) 60 - 130 Total Organic Matter (w/w, dry basis %) 94- 98 Organic Carbon (w/w, dry basis %) 45 -50 Water holding capacity (of dry weight) 8 - 9 times Air filled porosity (v/v, %) 10 - 12 Total pore space (v/v, %) 94 - 96