XIDAJIE 400Pcs 1-Inch Rockwool Cubes for Hydroponics Seed Starters | 25x25x40mm

Meet XIDAJIE's 400Pcs 1 inch rockwool cubes, crafted for seed starting and cuttings in soilless systems. Lightweight and inert, these blocks balance water retention with air flow to support robust early root growth. Each cube measures 25x25x40 mm, a practical size for germination trays and propagation setups.

Key advantages at a glance

• Excellent water retention paired with generous air permeability supports steady moisture and healthy roots.
• Shape-stable blocks resist crumbling during handling and transplanting, simplifying workflow.
• Root-friendly design enables penetration while reducing the risk of girdling or root circling.
• Glas fiber-free rock wool reduces concerns about loose fibers and is suitable for various soilless systems.
• Pack-ready for bulk propagation, ideal for hobby growers and larger projects alike.

What you get and how to use

• Contents: eight sheets of seedling rockwool cubes, totaling 400 blocks.
• Each cube is pre-sized at 25x25x40 mm with a built-in center hole for immediate use.
• To prepare, cut to desired sizes, soak in nutrient solution at 30–35 C until fully saturated, then adjust EC to 1.5–2.0 and pH to 5.0–5.5.
• Maintain suitable moisture, light, and temperature; transplant seedlings once roots reach about 0.5–1 inch.

Practical notes for best results

• Do not squeeze the cubes during soaking to preserve their structure.
• Snug but not overcrowded environments improve germination, especially for diverse crops.
• Versatile for hydroponics, cloning systems, and starting seedlings for vegetables, fruits, and flowers.

With reliable performance, these rockwool cubes offer a straightforward path to scalable propagation while keeping the focus on plant health and ease of use.