Product description

UPuper® hydroponic rockwool cubes can be used as an intermediary or final container for planting. Rockwool cubes provide a high-quality stonewool substrates for hydroponic and indoor cultivation.Hydroponic rockwool cubes are a popular growing medium in hydroponic systems for cultivating a wide range of plants, especially in soilless environments.

Product Specification

Single size: 4 *4 *2.5 (L*W*H（inch))

Hole Size: φ1",H1.38"

Grooves: Have

Film: Have white film wrapped.

Package: 216 pcs/carton

pH<7.5

Organic matter content<1.5%

Content of toxic and harmful heavy metals ：Not detectable levels

Meet GMP Hygiene requirements (Bioburden test) ： No microorganisms

Tags: hydroponic rockwool cubes

What are the advantages and limitations of hydroponic rockwool cubes?

Hydroponic rockwool cubes offer several advantages for plant growth in hydroponic systems, but they also have some limitations. 

Advantages:

Excellent Water Retention: Rockwool cubes have good water retention properties, ensuring that plants have a consistent water supply, reducing the need for frequent watering.

Air Porosity: The porous structure of rockwool provides ample oxygen to the plant roots, promoting healthy growth and preventing root suffocation.

PH Neutrality: Rockwool is pH neutral, allowing for precise control of pH levels in the nutrient solution to optimize nutrient uptake.

Sterility: Rockwool is sterile, reducing the risk of pests and diseases commonly associated with soil-based growing media.

Versatility: Suitable for a wide range of plant species and growth stages, making them a versatile choice for hydroponic gardening.

Reduced Root Circling: The air-pruning effect in rockwool discourages root circling and promotes a healthier root system.

Recyclable: With proper sterilization, rockwool cubes can be reused, reducing waste and costs.

Limitations:

Initial pH Adjustment: Rockwool may have an initially high pH, requiring soaking or treatment with pH-adjusted water before use.

Irritating Material: Handling rockwool can be irritating to the skin, eyes, and respiratory system due to its fine fibers. Protective gear is recommended when working with it.

Non-Biodegradable: Rockwool is not biodegradable, which may raise environmental concerns related to disposal.

Nutrient Leaching: Over time, rockwool can accumulate and leach excess minerals, affecting nutrient balance in the hydroponic system.

Risk of Overwatering: While it retains water well, it can be challenging to maintain the correct moisture level, potentially leading to overwatering if not carefully managed.

Requires Sterilization: Before reuse, rockwool cubes need to be sterilized to avoid the transfer of diseases or pests.