Size:12 Inch x 3 Inch x 36 Inch Gro-Slabs provide the final stage for growing a spectacularly large plant. Transplant your Gro-Block plant onto a slab just like professional growers. They come in clearly marked biodegradable UV resistant sleeves for comfortable handling and algae prevention. Uni-slab - All plant roots are protected and contained for the life of the plant. Due to its size, the Uni-Slab is perfect for one large plant. Uni-Slab has the benefits of a slab with the versatility of a block. All Gro-Slabs have vertical fibers except the 12 inch Gro-Slab, which has horizontal fibers.
L**.
Shipping was quick, product was well packaged. Slow to saturate.
I processed this slab into 4 x 4 x 2.5 inch cubes for use in a hydroponic growing wheel. It cut easily and was packaged nicely however I noted that when soaking the pieces prior to planting they were slow to accept water and I needed to physically hold many of the cubes under water for some time to insure they were thoroughly saturated. Even after 3 or 4 minutes, air bubbles were still emerging from the pieces. In contrast, the processed cubes I have purchased in the past typically will fill with water very quickly.
A**R
Four Stars
Good product, slightly overpriced.
W**L
Prime!
It's great to see Prime offers on Grodan finally! Thanks Amazon!
O**C
A great medium.
Great medium. Has great water retention and air retention. Roots love this medium.
J**K
One Star
Was very unpleased with the product but amazon did replace them
C**S
Only 5 bucks at local hydro store
Great stuff I bought mine at the local hydro store for 5 dollars each
Trustpilot
1 month ago
2 months ago
