SKU: 77214200146

Cultilene (Cultiwool) 4x4x4 Rockwool Block (144 pieces per case)

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Description

Cultilene (Cultiwool) 4x4x4 Rockwool Block (144 pieces per case)Cultiwool 4" x 4" x 4" Block (144 Blocks Case) Cultilene Cultiwools growing blocks are unique in the most efficient way. That has everything to do with the consistency of our 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

Cultiwool 4" x 4" x 4" Block (144 Blocks/Case) - Cultilene

Cultiwools’ growing blocks are unique in the most efficient way. That
has everything to do with the consistency of our 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 via 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 4" Rockwool Blocks are sold by the case.


Specifications

  • Stonewool Block
  • 1 Plug Hole 38mm / 40mm
  • Drainage Width Grooves
  • 4" x 4" x 4" (100mm x 100mm x 100mm)
  • 144 Blocks/Case
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
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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]
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SKU: 77214200146

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4.1 ★★★★★
Based on 25 reviews
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Product Reviews
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Verified Purchase
George J.
Carnegie, US
★★★★★ 5
Mastering Ubuntu Server
Format: Paperback
This book provides good experience and examples to make you successful right from the start.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 30, 2023
K
Verified Purchase
Ken S.
Massapequa, US
★★★★★ 4
Comprehensive?
Format: Paperback
I am a huge fan of Jay LaCroix and happy to support him by buying this book. That said, this book is in my opinion fully priced and not very comprehensive. My guess is it has more to do with Packt publishing and less to do with Jay. For sure, the content that is there is good and easy to consume ... as per Jay's style. And to be fair a truly comprehensive book would probably be another 1000 pages long. But a couple examples: cursory coverage of systemd:. eg discussion is on chron, crontab, etc instead of systemd timers. NTP server: if you have an Ubuntu server it would be great to set it up as your LAN NTP server for all your devices to sync time. Here is the coverage in this book "all servers should have the ntp package installed" Really? Do I need to disable systemd-timesyncd? Do I need to limit access by lan? How about setting up an Nginx reverse proxy for LAN services like unifi, pihole, etc? Sorry 3 pages of coverage. I am not trying to run down this book, only suggest that if you are looking for an authoritative comprehensive guide on Ubuntu 22.04, this probably will not be your only purchase. With all the foregoing, I would still buy this book if for no other reason than to support the author.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2023
K
Verified Purchase
Kindle Customer
New York, US
★★★★★ 5
Highly recommended
Format: Kindle
Very well written. Everything is clear and well organized. It serves as a good overview of the Ubuntu server and also as a rich reference for specific arguments.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 27, 2022
D
Verified Purchase
Dean T
Houston, US
★★★★★ 5
Another phenomenal product from Jay
Format: Paperback
The latest version provides everything one needs to create and secure an Ubuntu server. Fantastic book Jay!
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Reviewed in the United States on February 23, 2023
V
Vic Malone
Waukegan, US
★★★★★ 5
Very useful book on the latest Ubuntu distro
Format: Paperback
Disclaimer: Longtime follower and subscriber to Jay LaCroix’s YouTube site, Learn Linux TV. Several high quality authors (Jang, van Vugt, and Ghori the most well known) have been introducing new comers looking for more in-depth guides to Linux to the Red Hat world through their RHCSA Study Guides. The same cannot be said for Ubuntu. While books do exist for Ubuntu, they are too general in this reviewers opinion. A noted exception is Matthew Helmke. The other is Jay LaCroix. Mastering Ubuntu Server, 4th Edition by Jay LaCroix addresses Canonical’s latest Ubuntu release, 22.04 LTS (Jammy Jellyfish). Mr. LaCroix’s book follows the same outline as the RHCSA books of installation, user management, package management, navigating the file system through the terminal, command-line usage, up to and including storage and networking. These chapters lay a solid foundation for the rest of the book, and all but one chapter ends with a section for further viewing or reading which either point to Mr. LaCroix’s well produced videos on his YouTube channel, Ubuntu’s wiki, or to one of several informative websites. The YouTube videos are a good complement to the book, and also raise the bar for what we as readers should expect from other authors and publishers. The last part of the book was my favorite. Where as the RHCSA books are confined to the scope of the test they are aimed at, Mastering Ubuntu Server has no restrictions. Chapters covering the installation of databases (MariaDB), web servers (both Apache and Nginx), virtualization (QEMU/KVM), containerization (LXD and Docker), Ansible, AWS, and Terraform along with their corresponding videos (except for Terraform) create a comprehensive learning platform. Having worked through some of these chapters along with the videos, one does get up to speed much quicker in understanding while adding a new skill to their skillset. This is important in a competitive job market. I would recommend Mastering Ubuntu Server, 4 th Edition highly to anyone wanting something current for the 22.04 LTS distribution. Having said that, I do have some admittedly subjective criticisms. In the chapter on storage, the fdisk command is introduced for formatting and partitioning disks. In an industry where it is becoming less likely to install a hard drive of 2TB or less and manufacturers have 20TB hard drives in their product line, why not also introduce the gdisk command. My other criticism is directed at the virtualization chapter and its use of Virtual Machine Manager for KVM. I got my start working with KVM through the Virtual Machine Manager as well, but on the advice of a Systems Engineer I knew, transitioned to creating, configuring and managing all my VMs through the command-line only. I wished that the author pushed more in that direction. As I said, subjective opinions, and minor overall, for a well written book by Jay LaCroix.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 9, 2022

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