Halatool Rockwool Seed Starter Cubes 1.2-inch, 72-Pack Pre-Drilled Plugs for Hydroponics and Cloning

These compact rockwool blocks are designed for small hydroponic systems, tray germination, and indoor herb gardens. Each sheet contains precisely cut cubes with factory-drilled holes so you can plant seeds or insert cuttings quickly without extra tools. The mineral-wool composition provides a balance of moisture retention and oxygenation to encourage early root development before transplanting into larger media or systems.

How do these rockwool cubes simplify seed starting?

Pre-drilled holes and uniform cube sizes reduce handling and make seeding faster and cleaner. The sheets fit common trays and net cups so you can transfer plugs seamlessly into many hydroponic setups. Using a consistent medium helps standardize watering and nutrient schedules for multiple plants.

• 72 total cubes supplied as 2 sheets for batch planting
• Pre-cut and pre-drilled holes for direct seeding or cloning
• Fits 10x20 trays, 2-inch net cups, and common starter sites
• Consistent cube dimensions support uniform germination

What physical size and shapes should I expect?

Each individual rockwool cube measures approximately 1.18 x 1.18 x 1.5 inches, and each sheet is about 11.4 x 5.1 x 1.5 inches. The compact footprint is ideal for dense propagation areas and small-scale systems like Kratky jars or DWC starters. Knowing the exact dimensions helps you choose compatible trays and net cups.

• Single cube: ~1.18" x 1.18" x 1.5"
• Sheet size: ~11.4" x 5.1" x 1.5" containing 36 cubes each
• Designed for 2-inch net cup compatibility and compact trays

How do I prepare and use these Halatool rockwool plugs?

Preparation is straightforward: wear gloves, cut or separate cubes as needed, and soak them in a pH-adjusted nutrient solution before planting. Place seeds into the pre-drilled holes or insert cuttings; keep the medium moist and provide light appropriate for the crop. Transplant once roots extend approximately 0.5–1 inch beyond the plug.

• Wear gloves when handling rockwool to avoid skin irritation
• Soak cubes in nutrient solution and adjust pH/EC before seeding
• Transplant when roots protrude 0.5–1 inch through the cube

Which crops and systems work best with these cubes?

Halatool rockwool is well suited for herbs, leafy greens, and many small vegetable transplants during their early stages. They perform especially well in hydroponic setups such as NFT, DWC, Kratky, and tower gardens or in tray-based germination for later potting. These cubes are intended for short-term propagation rather than permanent long-term growing media.

• Ideal for basil, lettuce, mint, herbs, tomatoes, and pepper seedlings
• Great for cloning, microgreens, and short propagation windows
• Compatible with Kratky, DWC, NFT, tower gardens and starter trays

Who is this for: Growers who need a reliable, compact propagation medium for home hydroponics, small commercial seed-starting, or hobby cloning will appreciate the Halatool 72-piece rockwool set. It’s designed for gardeners wanting consistent plug size, quick setup, and easy transfers into a variety of systems without the bulk or waste of loose media.

Ingredients

Basalt