UPuper® Innovations proudly introduces the CB Series 4x4x2.5 inch Double Hole Rock Wool Growing Cubes, a breakthrough solution for commercial hydroponic cucumber production. Engineered to optimize space, reduce costs, and streamline seedling management, these cubes redefine efficiency for controlled environment agriculture.

Why Choose Double Hole Rock Wool Cubes?

The UPuper 4x4x2.5 inch double hole rockwool cubes effectively address the challenges of planting density inherent in single-hole growth blocks while also lowering production costs.

It allows two cucumber seedlings to thrive in a single cube—effectively doubling space utilization without compromising root health or yield quality.

Key Features & Benefits

✅ Dual-Hole Efficiency

Grow two cucumber seedlings per cube, increasing planting density compared to single-hole alternatives—ideal for commerical cucumber planting greenhouses.

✅ Root-Friendly Design

Pre-cut grooves enhance drainage and promote air pruning, preventing root circling.

Individually wrapped cubes maintain structural integrity during transplanting, minimizing root damage.

✅ Superior Water & Nutrient Management

Uniform moisture distribution and balanced electrical conductivity (EC) across the cube ensure consistent seedling growth.

✅ Plug-and-Play Compatibility

Works seamlessly with most grow slabs and hydroponic systems.

Pre-cut holes, saving labor time.

✅ Data-Driven Performance

Batch-to-batch consistency supports long-term yield tracking and optimization, critical for commercial growers.

The UPuper CB series is tailored for:Large-scale cucumber, tomato, bell pepper hydroponic greenhouses.

About UPuper Innovations

A leader in advanced horticultural substrates since 1990s, UPuper designs data-compatible growing media for the hydroponics industry. Our mission: Help growers achieve more with less.

If you want to know more about UPuper® rockwool products, please view www.upuper.com.