Bironzoco Hydroponics
These grow sponges provide a stable environment for starting seeds and cuttings in hydroponic systems. They offer a reliable base for root development in small-scale indoor gardens
1 system on this hub
Sets Fits 16 inch Affordable
Standard sizing
Each sponge measures 1.5 in wide by 2.16 in high.
Bulk supply
This set includes 20 individual replacement sponges.
Root support
The material provides a soft structure for young roots.
Notes from buyers
These sponges fit my indoor garden perfectly and kept the seeds moist.
The size is exactly as described and they held up well throughout the growing season.
I used these to replace my old pods and my herbs started growing within a few days.
Replacement Grow Media Standards
These sponges are designed to fit standard hydroponic baskets for consistent seed germination. The dimensions ensure a snug fit for stable plant growth.
- Uniform 1.5 in width
- Vertical 2.16 in height
- Replacement sponge format
- Seed starting compatibility
- Soft texture for roots


The set
Bironzo focuses on Fits 16 inch, Affordable, Replacement grow sponges in the current models.
Materials and parts
Bironzo keeps the build language in the product names: Small cylindrical grow sponges 20 pack.
Made to use
If you need Fits 16 inch, Affordable, Replacement grow sponges, this is the Bironzo set to scan.
How they differ
The useful differences sit in Fits 16 inch, Affordable, Replacement grow sponges, not in a brand slogan.
Bironzoco Questions
What are the dimensions of these sponges?
Each sponge is 1.5 in wide and 2.16 in high.
How many sponges come in this set?
This set contains 20 replacement grow sponges.
What are these sponges used for?
They are used as a grow medium for starting seeds in hydroponic systems.
Are these for specific plants?
These are general-purpose sponges suitable for various herbs and small plants.