SKU: 19349220665

Cultiwool 4" x 4" x 2.5" Blocks of Cultilene Rockwool - Case of 216

$91.35 $101.50
Save 10%
No.2 Bestseller on watersyst.com >

Pay in installments of $25.38 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 20 - Aug 25

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Cultiwool 4" x 4" x 2.5" Blocks of Cultilene Rockwool - Case of 216Description Cultiwool 4" x 4" x 2. 5" Block (216 Blocks Case) Cultiwool 4" x 4" x 2. 5" Block (216 Blocks Case): Cultiwools' growing blocks are unique in the most efficient way. That has everything to do with the consistency of the products. Quick and easy uptake of water and the homogeneous distribution of water throughout the substrate are one of the most important features of a growing medium. Not only can you expect the highest quality stone wool

Description
  • Cultiwool 4" x 4" x 2.5" Block (216 Blocks/Case)

  • Cultiwool 4" x 4" x 2.5" Block (216 Blocks/Case): Cultiwools' growing blocks are unique in the most efficient way. That has everything to do with the consistency of the products. Quick and easy uptake of water and the homogeneous distribution of water throughout the substrate are one of the most important features of a growing medium. Not only can you expect the highest quality stone wool in the market, but Cultiwool is also the first to introduce the 'donut ring' for the retail market to even further improve water distribution. This is in addition to the highly appreciated cross grooves to improve water flow under the block, and the black/white foil to prevent algae growth. The Cultiwool substrate blocks are provided with drain grooves at the bottom to improve the waterflow under the block. This is especially useful when the substrate blocks are placed on cultivation tables and concrete floors. Another benefit of the drain grooves under the block is that it will limit the contact surface with the ground. This will avoid bringing deseases in to the plant through weak roots often in combination with too high temperatures. As first in the industry, Cultiwool will provide the substrate with a donut ring as well, a water chamber around the plug hole to place your drippers. With the donut ring you will achieve an even more homogeneous distribution of the water throughout the block. A welcome second advantage is that you can not make any mistake anymore with the positioning of the drippers in the block.

  • Cultiwool 4" x 4" x 2.5" Rockwool Blocks are sold by the case.

  • Cultiwool 4" x 4" x 2.5" Rockwool Blocks are sold by the case.: Specifications
    • Specifications
  • Stonewool Block
  • 1 Plug Hole 38mm / 40mm
  • Drainage Width Grooves
  • 4" x 4" x 2.5" (100mm x 100mm x 65mm)
  • 216 Blocks/Case
  • My Account My Account Drop Ship Program
  • My Account
  • Drop Ship Program
  • Become A Dealer
  • Careers
  • Fitment Charts
  • Marketing Materials
  • RMA Form
  • Where To Buy
  • Information About Us Privacy Policy Terms and Conditions the Brands
  • About Us
  • Privacy Policy
  • Terms and Conditions
  • the Brands
  • CONTACT INFORMATION: My Account My Account Drop Ship Program
    • Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 19349220665

    Discover Niche Categories That Outsell

    Top-Converting Item to Boost Your Average Order

    4.0 ★★★★★
    Based on 13 reviews
    Sort
    Highest Rating
    Newest First
    Oldest First
    Product Reviews
    C
    Verified Purchase
    ChilledOut
    Draper, US
    ★★★★★ 1
    Fuzzballs get wearing once
    Color: Black, Size: X-Large
    Very smart to wear, but the quality is terrible so after one wash the collar start fraying and fuzzballs start forming. Very disappointing.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on June 2, 2026
    D
    Verified Purchase
    Donna
    Dallas, US
    ★★★★★ 5
    Mock shirt for everyday wear.
    Color: Gray Green, Lotus Pink, Sky Blue, Size: X-Large
    Love how soft the fabric is and wears very well. Very happy with purchase and have bought other colors as well.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 22, 2026
    N
    Verified Purchase
    Nick Casad
    Natrona Heights, US
    ★★★★★ 3
    Amazon brand looks bad
    Color: White, Light Gray, Black, Size: X-Large
    II think the quality is poor the fabric is thin and the moc collar won't stand up
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on July 20, 2025
    A
    Verified Purchase
    Amazon Customer
    Birmingham, US
    ★★★★★ 5
    Satisfied
    Color: Brown, White, Black, Size: Large
    Nice fit and comfortable
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 18, 2026
    T
    Verified Purchase
    4th Cav Trooper
    Charlottesville, US
    ★★★★★ 5
    Nice material, holds collar shape well.
    Color: Wine Red, Navy Blue, Black, Size: Medium
    Good value for the money. You can machine wash and dry on low heat, in my opinion. Laying flat is too much of a pain.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 30, 2026

    recommand products

    BlueJose Crappie Fishing Sunset Personalized Cap
    29.50
    Paradise in the Pacific: The Life, Culture, Kings and History of Hawaii and Honolulu, Seen Firsthand by a Traveller to the Hawaiian Islands in the 1870s
    29.98
    Bluejose Striped Bass Fishing Red Gray Spinning Pattern Custom Name & Team Name 3D Shirts
    39.95
    BlueJose Billiards Deadly Thunder Skull Personalized Name Cap (6 colors)
    29.50
    Pancreatic Care Package
    25.75