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Grow Sponges for Hydroponic Systems, 50 Pack

4.9 (1) Write Review
Free shipping on orders over $29.99

$10.99

$ 4 .99 $4.99

In Stock

About this item

  • Optimal Water Retention: Bironzoco Grow sponges for hydronic systems are designed to retain the right amount of moisture, ensuring that plants receive a consistent supply of water without the risk of overwatering.
  • Efficient Root Aeration: The porous structure of hydroponic grow sponges allows for excellent air circulation around the roots, promoting healthy root development and preventing root rot.
  • Biodegradable: Our hydroponic grow sponges are made from biodegradable materials, making them an environmentally friendly choice compared to traditional soil or plastic-based growing mediums
  • Easy Transplantation: Once seedlings are established, the sponges can be easily transferred to larger hydroponic systems or traditional soil, minimizing transplant shock and promoting continued growth
  • Broad Compatibility: Once soaked, the grow sponges expand to 2.56 inches in height and 0.9 inches in diameter, making them compatible with most hydroponic growing systems on the market. Whether using seed starter pods with grow baskets or specialized seed starter systems, you can ensure reliable germination and strong root development. These hydroponic pods also work well with seedling trays and potted plants, suitable for indoor gardens or outdoor planting.



5.0 out of 5 stars Best Sellers Rank
  • #125,981 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
  • #60 in Hydroponic Growing Media
 Date First Available May 23, 2025

Bironzoco Grow Sponges for Hydroponic Systems, 50 Pack


Bee
Reviewed in the United States on June 25, 2025
I've had a 100% germination rate using these sponges with various batches of peppers, tomatoes, peas, rat tail radishes, and cosmos. The peat blend seems to perfectly accommodate all these seeds, resulting in consistently rapid growth for each variety, with strong root and top growth—even without additional nutrients (as I typically start the seeds before transplanting them to the garden). These are five-star hydro sponges.*Side note: I soak the sponges for anywhere between 10 minutes and overnight, and they fit snugly in all my grow baskets. My baskets include a mix of name-brand and generic options, and the sponges fit them all perfectly.
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