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Deal.ai › Seed Starter Trays
Protoiya
Protoiya 24PCS Rockwool Stonewool Grow Cubes Starter Sheets for Cuttings, Cloning, Plant Propagation, Seed Starting Hydroponic Grow Media Growing Medium for Vigorous Plant Growth

Protoiya 24PCS Rockwool Stonewool Grow Cubes Starter Sheets for Cuttings, Cloning, Plant Propagation, Seed Starting Hydroponic Grow Media Growing Medium for Vigorous Plant Growth

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$9.79at WalmartChecked 8 h ago

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Price facts

  • Lowest price today: $9.79 at Walmart (checked Nov 15, 2026).

Our take on the Protoiya 24PCS Rockwool Stonewool Grow Cubes Starter Sheets for Cuttings, Cloning, Plant Propagation, Seed Starting Hydroponic Grow Media Growing Medium for Vigorous Plant Growth

Protoiya's rockwool starter cubes are small mineral-wool blocks for rooting cuttings, germinating seeds and starting plants in hydroponic or soil setups. Rockwool holds water and air well and gives roots a stable, pH-neutral medium to grow into. They suit propagators, clone takers and hydroponic growers who want a clean, uniform starter plug. Compared with peat pellets or coco plugs, rockwool does not break down and needs pre-soaking and pH-adjusted water before use.

Best forTaking cuttings and clonesGerminating seeds indoorsHydroponic and drip-system startsGrowers who want a uniform, reusable-style medium
Pros
  • Holds moisture while leaving air for roots
  • Uniform block size for even germination
  • pH-neutral and free of nutrients, so you control feeding
  • Works in hydroponic systems and in soil or coco
  • Does not break down like peat pellets
Cons
  • Must be soaked and pH-adjusted before use
  • Loose fibers can irritate skin and lungs
  • Not a complete medium; needs nutrients added
  • Can stay too wet if overwatered

Protoiya 24PCS Rockwool Stonewool Grow Cubes Starter Sheets for Cuttings, Cloning, Plant Propagation, Seed Starting Hydroponic Grow Media Growing Medium for Vigorous Plant Growth prices at every store

  • WalmartNew

    In stockSold by HcqxnslReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $9.79+ $5.50 shippingChecked 8 h ago
    Visit Walmart

About the Protoiya 24PCS Rockwool Stonewool Grow Cubes Starter Sheets for Cuttings, Cloning, Plant Propagation, Seed Starting Hydroponic Grow Media Growing Medium for Vigorous Plant Growth

https://m.media-amazon.com/images/I/71Q9Qrsmq1L._AC_SL1000_.jpg

Specifications

size
24PCSSource

Questions and answers

Do I need to soak the cubes before using them?
Yes. Rockwool is alkaline out of the bag, so soak the cubes in pH-adjusted water before planting. Many growers soak for a few hours to overnight.
Can I use these cubes for cuttings and clones?
Yes. The cubes are sized for stem cuttings and clone propagation. Keep them moist but not soaked and give the cuttings humidity until roots show.
Do the cubes contain nutrients?
No. Rockwool is an inert medium with no plant food. Start feeding a mild nutrient solution once roots or seedlings are established.
Can these go straight into soil or a hydroponic system?
Yes. Plant the cube with the seedling or rooted cutting into soil, coco or a hydro system. The wool stays around the roots without harming them.
Are rockwool cubes safe to handle?
The fibers can irritate skin and airways. Wear gloves and a mask when handling dry cubes, and avoid breathing the dust.
Where is the Protoiya 24PCS Rockwool Stonewool Grow Cubes Starter Sheets for Cuttings, Cloning, Plant Propagation, Seed Starting Hydroponic Grow Media Growing Medium for Vigorous Plant Growth cheapest?
At Walmart, for $9.79, as of our latest check.

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