Sunshine Mix # 4 Natural & Organic w/ Mycorrhizae 3.8 cu ft BVV Cost-Efficient: A more wallet-friendly alternative

Cost-Efficient: A more wallet-friendly alternative to Gro-Blocks™ without compromising on quality

and bug-resistant filters to make growing easier for everyone—from hobbyist to pro

The latch is already airtight

no power needed

is washable

Sunshine Mix # 4 Natural & Organic w/ Mycorrhizae 3.8 cu ft BVV Cost-Efficient: A more wallet-friendly alternativeSunshine Mix #4 Natural & Organic + mycorrhizae contains an organic fertilizer composed of feathermeal, sulfate of potash and bonemeal. As with all organic fertilizers, the nutrients are released by decomposition through fungi and bacteria. Therefore, you may note the presence of fungal hyphae on the surface of the mix during the active decomposition phase. The fertilizer should be supplemented with your choice of liquid feeds as needed by the plants.