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50 Pack Grow Sponges Square Sponge Replacement Part Seedling Starter Sponges for Hydroponic Indoor Garden System Cuttage Rooting Germination Kits

  • Based on 11 reviews
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Availability: In Stock.
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Arrives Friday, Feb 20
Order within 21 hours and 36 minutes
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Features

  • [High Quality Hydroponic Grow Sponges]:Square-shaped growing cubes made from compressed organic matter, perfect for seed starting and plant propagation. our replacement grow sponge is made of natural material,which can provide a safe environment for you plant growing. plants will grow more healthy.
  • [Easy to Use]:Our replacement grow sponge is easy to use. After soaking the seed pod sponge in water for 10-15 minutes, put seeds in the middle of grow sponge. The soaked hydroponic sponge measures approximately 1.42 x 1.3 x 1.1 inches and is suitable for almost all standard cloning trays and other configuration containers, making it ideal for amateur gardeners and commercial hydroponic growers.
  • [Widely Use]:Suitable for both hydroponic systems and traditional gardening methods, supporting healthy root development Perfect for any seed germination and plant grow.You can grow vegetables and herbs, such as strawberries, tomatoes, pepper, coriander, basil, flowers, etc. No soil, won't get dirty, allowing you to enter all year round in spring
  • [What You Get]:You will receive 50 packs replacement grow sponges ,enough quantity to meet your various planting needs. All of these seed sponges are via drying process prior to shipping, so you don't need to worry about mold.
  • [Easy to store] The sponge being planted is dry before leaving the factory, light in weight, free from pests or mold problems, and convenient to store. A meaningful gift for planting enthusiasts.You don't have to worry about it affecting the germination and growth of plants due to quality problems!

Description

With our sponge, you will get the following advantages: 1. Efficient: Our sponge adopts the most advanced technology, which can quickly plant and cover plants without waiting. 2. Fast growth: Our planters support a variety of planting methods, including hydroponics, soil cultivation, spraying, etc. which can help you grow and manage plants quickly. 3. Easy to use: Our production process is simple, just use a simple and easy-to-use sponge, and you can easily complete the planting. 4. Safe and reliable: All our raw materials come from environmentally friendly raw materials, which can be used with confidence.providing a perfect balance of oxygen and water for seeds. Used in conjunction with hydroponic planting systems to achieve reliable germination and healthy root development

Brand: SIETAMIS


Item Form: Solid


Number of Items: 50


Unit Count: 50.0 Count


Package Dimensions ‏ : ‎ 11.97 x 6.02 x 1.65 inches; 14.89 ounces


Date First Available ‏ : ‎ January 14, 2025


Best Sellers Rank: #139,680 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #290 in Plant Germination Kits


#290 in Plant Germination Kits:


Customer Reviews: 4.2 4.2 out of 5 stars 11 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Feb 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Perfect fit for hydroponics in seedling trays!
I used these to grow lettuces and watercress for hydroponics. Copied an idea I saw in a Youtube video, to grow plants in a seedling tray. These sponges are the perfect size for seedling trays. My seeds germinated really quickly and my little plants are progressing nicely. Photos show the unsoaked sponges as they are (well) packed, day 4 of seed germination, and day 8 of seedling development. These sponges are easy to use for this purpose, provide a great medium for seed germination, and work well in fitting standard seedling trays. A great value for money in providing the perfect solution and fit! ... show more
Reviewed in the United States on August 13, 2025 by Susurration Susurration

  • Works well but weird size
I ended up having to scale down a 3d print I found to use these but they work just as good as any other just a very weird size.
Reviewed in the United States on July 20, 2025 by Kids Club

  • Great Product
The 50 Pack Grow Sponges from SIETAMIS work well with my hydroponic setup. I tested them with both cloning and seed starting, and the results were successful in each case. The sponges are firm but porous and fit well into my hydroponic system. They retain moisture effectively and help promote rooting and early growth. For the price, they offer a very good value, especially considering the quantity in the pack. I recommend this product for anyone involved in hydroponic gardening or professional agronomy. ... show more
Reviewed in the United States on May 27, 2025 by Philip

  • Good quality but not standard size
These sponges are good quality, but they did not fit the standard size for my hydroponics systems.
Reviewed in the United States on May 7, 2025 by Tikihete

  • Great little starters!
I'm starting herbs and tomatoes and these look to be working well so far. I am learning about this process of growing things indoors and these are my first starters like this. So, I'm not an expert, but they plumped up well and little seeds are sprouting.
Reviewed in the United States on June 5, 2025 by Nezi

  • Great for starting seeds
These are exactly what I expected them to be. You do have to submerge them in water before using them, but it is a quick and easy process. They become slightly bigger after submerging. There are a lot of them included for the 19.99 current price. It has been almost a week and have not had anything sprout as of yet, but I feel confident that they will. If not, I will update this review! ... show more
Reviewed in the United States on April 2, 2025 by A Kimball

  • Great Value, Eco-Friendly Alternative to Plastic Starters
These sponges plump up fast and work great in my seed tray. Love that they cut down on plastic waste. They expand quite a bit when wet, so check your setup size. Solid value for the price.
Reviewed in the United States on May 15, 2025 by Lyra Hawk

  • Easy to use
I am using these for seed starting for my vertical grow garden, I am not using it for hydroponics. They easily plump up in water and I am keeping them in a grow tray. I like this so much more than the plastic starter pots which don’t last and this doesn’t have plastic waste. Love them!
Reviewed in the United States on April 15, 2025 by Hibou

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