Critical Mass Systems

Critical Mass Systems Founded on over 25 years of industry experience to bring you the knowledge and power to be as dynamic in the marketplace, as the products we supply.

We are currently looking for a new member to join our team this position is for a mainly weekend job role with some extr...
15/04/2025

We are currently looking for a new member to join our team this position is for a mainly weekend job role with some extra days and possible holiday cover etc. Please send a CV and covering letter to [email protected] if you would like to apply!

We are hiring! - Critical Mass Systems are looking for an individual to join our team, ideally the candidate will be a g...
12/09/2023

We are hiring! - Critical Mass Systems are looking for an individual to join our team, ideally the candidate will be a good communicator and have some experience relevant to the role however full training will be provided to the right person.

The ideal person would:
• Be excited about the challenge of a varied and fast-paced job
• Be flexible, supportive and always ready to go the extra mile
• Be willing to learn about how to use the equipment we sell in order to advise customers
• Maintain excellent time keeping
• Advising customers both about the equipment we sell and on popular growing techniques (after being given training from the sales team)
• Upselling and advising add on products to customers
• Carrying out routine stock inspections and always working with a focus on stock accuracy.
• Cleaning and maintaining the shop area and active plant will also be part of the daily routine.
• You will be expected to support your team and complete any further tasks assigned to you.

If you think that this would be for you then please send over a CV and cover letter to [email protected]

Nutrient Focus! - Sh**un nutrients are a Sheffield made quality nutrient company, having seen first hand the development...
06/07/2023

Nutrient Focus! - Sh**un nutrients are a Sheffield made quality nutrient company, having seen first hand the development of this nutrient range from the beginning and knowing the people behind this brand we are confident in selling this to anyone who comes through our doors. From new to experienced growers the results speak for themselves, if you've never tried Sh**un Nutrients and are looking for a new range to try we cant recommend them enough. Drop into our Sheffield branch and we even have a few Sh**un samples to give away - while stocks last.

https://www.criticalmasssystems.co.uk/search?type=product&options%5Bprefix%5D=last&q=shogun

NEW PRODUCT ALERT!Introducing the Spectro-Tech range of LEDs from Control LED. These LEDs feature enhanced red and far-r...
05/07/2023

NEW PRODUCT ALERT!

Introducing the Spectro-Tech range of LEDs from Control LED. These LEDs feature enhanced red and far-red diodes enhancing the flowering response of your plants to achieve a better ripening process and a better quality end product.

Available in 660w, 480w and 300w versions these foldable LEDs are fast becoming our best selling unit.

Get in touch for best prices on this new impressive technology!

Find them here in our LED lighting section of the website:

www.criticalmasssystems.co.uk/collections/led-lighting

Get in touch for advice on growing with these or any other LED to achieve the best results possible!

Get summer ready with Critical Mass Systems - we have solutions to help you deal with summer growing issues such as thes...
13/06/2023

Get summer ready with Critical Mass Systems - we have solutions to help you deal with summer growing issues such as these chillers just arrived for our hydroponic customers. Keep your nutrient solutions below 21 degrees Celsius to avoid root issues such as Pythium. Get in touch for anything you need this summer!

We've made it in today, bit later than usual apologies to any early birds we may of missed. If you're venturing in today...
10/03/2023

We've made it in today, bit later than usual apologies to any early birds we may of missed. If you're venturing in today be safe, take it steady and we'll be here until 6pm.

🥶🌨⛄️❄️

We are open for your convenience throughout the festive period! our Christmas hours are as followsXmas Eve - Open 10am-4...
23/12/2022

We are open for your convenience throughout the festive period! our Christmas hours are as follows

Xmas Eve - Open 10am-4pm
Xmas Day - CLOSED
Boxing Day - CLOSED
Tuesday 27/12 Bank Holiday - Open 11am - 4pm
Wednesday 28/12 - Open 10am-5pm
Thursday 29/12 - Open 10am-5pm
Friday 30/12 - Open 10am-5pm
Saturday 31/12 (NYE) - Open 11am-4pm
Sunday 1/1 New Years Day - CLOSED
Monday 2/1 Bank Holiday - Open 11am-4pm

Merry Xmas and a happy new year to all our customers old and new!

We often get asked for products such as PGRs as customers aim to produce denser flowers and extra weight, some of these ...
18/11/2022

We often get asked for products such as PGRs as customers aim to produce denser flowers and extra weight, some of these products contain chemicals we wouldn't recommend using. We are now however stocking Goliath from Evoponic which does the same job but without nasty chemicals. Designed to be used late on in the flowering stage for one week (week 6 or 7) Goliath will improve density and weight without compromising on quality. 1l bottles in stock now available online or instore 🌱🌱🌱



https://www.criticalmasssystems.co.uk/collections/flowering-boosters-additives/products/goliath-1l

Growers Ark Root Tonic is a UK made root stimulant that is made with only the finest ingredients regardless of cost and ...
25/10/2022

Growers Ark Root Tonic is a UK made root stimulant that is made with only the finest ingredients regardless of cost and still represents excellent value for money and top performance. Available in 500ml, 1l, 5l and 10l variants. Drop down to the shop while we still have some free 500ml bottles for you try! (while stocks last)

https://www.criticalmasssystems.co.uk/collections/root-stimulants/products/growerarkroottonic5ltr

We are sure you'll be impressed with the results. 🌱🌱🌱

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We're very pleased to of added the Evoponic Elixir Steroids to our product range. This unique product was originally bro...
24/10/2022

We're very pleased to of added the Evoponic Elixir Steroids to our product range. This unique product was originally brought out as tool to help stressed plants recover from issues such as pests and disease or environmental problems, since then it has been discovered to not only help recovery but also be capable of turbo-charging growth at every stage. Come down to our Sheffield store or find it online. https://www.criticalmasssystems.co.uk/collections/flowering-boosters-additives/products/evoponic-elixir-steroids

Check out our Fresno chillies growing in one of our display tents under the awesome Maxibright Daylight 300w Pro led. Gr...
14/06/2022

Check out our Fresno chillies growing in one of our display tents under the awesome Maxibright Daylight 300w Pro led. Growing in a Wilma 4 pot drip system makes maintenance easy and guarantees your plants are fed with a timed irrigation pump.

Come and check out all our LEDs in store and get up to 20% discount off selected units for a limited time including the full Maxibright Daylight range.

Get ready for summer today! 🌱☀️🔥

https://www.criticalmasssystems.co.uk/collections/led-lighting

Address

Unit 4
Sheffield
S203GL

Opening Hours

Monday 9:30am - 6pm
Tuesday 9:30am - 6pm
Wednesday 9:30am - 6pm
Thursday 9:30am - 7pm
Friday 9:30am - 6pm
Saturday 10am - 5pm
Sunday 11am - 4pm

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