Halatool 72-Count 1.2-inch Rockwool Cubes + 56 2-inch Net Cups — Kratky Hydroponics Kit for Soilless Cultivation

Overview

Halatool's 72-pack of 1.2-inch rockwool cubes paired with 56 two-inch net cups forms a compact, beginner-friendly hydroponics kit. Built with Kratky and other soilless systems in mind, the pair helps seeds stay moist, roots stay well-ventilated, and transplanted plants settle into their new containers with minimal fuss. Use indoors under a grow light or outdoors for small-space projects, and consider this setup as a thoughtful gift for anyone exploring hydroponics, cloning, or seed starting.

What’s included

• 72 × 1.2-inch rockwool cubes
• 56 × 2-inch net cups
• Basic guidance for seed germination and cloning in a soilless setup

Materials and design

• Rockwool material offers high water absorption and generous air permeability to support root growth and stable moisture levels
• Mesh cups are made from durable plastic with enough flexibility for reuse and secure plant support

How to use

• Divide the rockwool into cubes with scissors as needed
• Briefly soak the cubes (about 10 seconds) in nutrient solution to adjust EC and pH for your seeds
• Place seeds in the cubes so roots grow toward the net cups and access the nutrient solution below
• Transition to a soilless growing setup and monitor moisture, light, and nutrients as plants develop

Practical uses and care

• Ideal for quickly cloning plants you plan to replant as seedlings or transplant later
• Suitable for starting seeds in compact spaces, from apartments to patios
• Indoor use with a grow light or outdoor use in favorable weather

Safety and reuse tips

• Wear gloves and perhaps a mask when handling rockwool; avoid contact with eyes
• You can reuse the plastic net cups, but the rockwool cubes are intended for single-use with each plant
• For product quality concerns, reach out to Halatool support