SLF-100
SLF-100 Enzymes
Pickup available at Sheffield store
Usually ready in 1 hour
Shipping & Returns
Our current shipping rates are as follows:
- UK Orders Over £50 – Free Next Day Delivery
- UK Orders Under £50 – £8 (Next Day Delivery)
- UK Orders Next Day AM – £20
- UK Orders Saturday AM – £30
- International Orders DAP – Select between UPS or Fedex and we'll sort the rest. (All duty paid by us prior to shipping)
All parcels are fully tracked. Once your order has been dispatched, you’ll receive an email containing your tracking number.
If your order is classed as an oversized item OR deemed extra heavy, additional heavy shipping duty will be added at checkout when selecting your shipping options.
Returns
We want you to be completely satisfied with your purchase, but if you change your mind, you may cancel your order within 14 days of receipt for a full refund, provided the items are unused and in resalable condition.
Once your cancellation has been confirmed, you must return the items within 14 days, ideally in their original packaging.
Click & Collect
Order online and collect directly from our Sheffield OR Barnsley store. Once your order is ready, you’ll receive an email or phone confirmation with collection details. Please wait for confirmation before travelling to ensure your order is prepared.
Please have your order number ready to give to a member of staff when you arrive.
Sheffield Store:
GSH Retail Ltd
Unit 5, 230 Woodbourn Road
Sheffield
S9 3LQ
Barnsley Store:
GSH Retail Ltd
Unit 6, Rockingham Business Park
Rockingham Row, Birdwell
Barnsley, S70 5TW
Local Same Day Delivery Service
Our man in a van!
Same-Day Delivery Service
Enjoy fast, reliable, and fully discreet same-day delivery with Green Spirit when you order from our Sheffield store area.Whether you shop online or
in-store, we make getting your items easy,convenient, and secure.
Order Online
When placing your order through our website, simply select the Same-Day Local Delivery option at checkout.
- Free Same-Day Delivery on orders over £250.00
- Available customers within a 3-mile radius of our Sheffield store (S9 3LQ)
- Orders under £250.00 can still be delivered the same day for a £50.00
flat fee
Your order will be prepared and delivered directly to your
door the very same day, using our discreet delivery service.
Order In-Store
If you prefer to shop in person, visit our Sheffield
location to browse, purchase, and arrange delivery.
- Pay
in full for your items in-store - Choose
a delivery time and date that suits you best - Our
team will ensure a smooth and convenient handover
Discreet Delivery Promise
We understand the importance of privacy.
- All
our delivery vans are plain and unmarked, with no company
branding - Parcels
are packaged in plain or black wrapping for complete discretion
Delivery Requirements
To ensure everything runs smoothly:
- Customers
must be present at the agreed delivery time - Drivers
cannot wait for extended periods - If
the customer is not available, items will be returned to the store and a £50.00
redelivery fee will apply
Upon
delivery, we will request a order number, name and signature to
confirm receipt
Discreet Shipping
All orders from GSH Retail Ltd are packed securely and shipped in Plain unbranded boxes for your privacy. We understand that discretion is important, so no external markings or product details are visible on the packaging.
Each parcel is also wrapped in durable black film and sealed with fragile tape to ensure both security and protection in transit.
We take great care to make sure your order arrives safely, discreetly, and in perfect condition — every time.
Methods Of Payment
We accept a wide range of secure payment options for your convenience when shopping with GSH Retail LTD
You can pay using:
Visa, Mastercard, American Express, and Discover
Apple Pay, Google Pay, and Shop Pay
PayPal – Fast and secure online checkout with buyer protection
Klarna – Flexible payment options, including Pay in 3 instalments or Pay Later
Clearpay – Split your purchase into four interest-free payments
Weston Union– Supported for international customers
Cash In The Post - This is at your own risk! Please make sure it is signed for, tracked, and insured.
Manual Bank Transfer - Contact a member of staff to organise paying via bank transfer.
All transactions are processed securely through Shopify’s encrypted checkout. Your payment details are never shared directly with us.
Once your order is placed, you’ll receive an order confirmation email, followed by tracking details once your parcel has been dispatched.
Finance Options
We offer flexible finance options to make purchasing easier. You can choose to spread the cost of your order, all three options are interest-free and give you the flexibility to manage your payments in a way that suits you.
PayPal Pay in 3
PayPal Pay in 3 allows you to divide your purchase into three equal interest-free payments over two months. The first payment is made at checkout, followed by two automatic payments each month.
It is available on orders between £30 and £2,000, and approval is completed instantly through your PayPal account. You can view, manage, or make payments easily through the PayPal app or your online account.
Shop Pay
Shop Pay Installments lets customers pay for an order in smaller increments over time.When available, Shop Pay Installments is a great option to help you maximize your budget for orders between the following amounts, depending on your location:
Klarna
Klarna offers two flexible ways to pay. With Pay in 3 instalments, your order total is divided into three equal payments, taken every 30 days with no interest or fees when paid on time. Alternatively, you can choose Pay Later in 30 Days, allowing you to receive your order first and settle the balance within 30 days. Klarna provides instant approval at checkout, and all payments can be managed securely through the Klarna app.
Clearpay
Clearpay lets you spread the cost of your purchase into four equal interest-free payments, taken automatically every two weeks. The first instalment is paid at the time of purchase, and the remaining three are collected automatically over six weeks. Clearpay is available for orders between £30 and £1,000 and can be managed easily through the Clearpay app.
Important Information
All finance options are subject to eligibility and approval by the provider. Late or missed payments may affect your credit score, so please ensure funds are available when payments are due. For details about eligibility, limits, or payment schedules, please refer to the provider’s website or app.
Earning Points & Rewards
At GSH Retail we believe loyalty should be rewarded - Our Points & Rewards scheme allows you to collect points every time you shop and redeem them for discount codes to use on future purchases.
When you make a purchase through our website, you’ll automatically earn points based on the value of your order. These points are added to your account and can be saved or redeemed whenever you choose. Once you’ve collected enough points, you can exchange them for a unique coupon code that can be applied at checkout to reduce the cost of your next order.
Earn 5 Points for every £1 spent
Redeem 100 Points for £1 Store Credit
Your points never expire as long as your account remains active, and you can track your balance easily through your customer account dashboard. It’s our way of saying thank you for choosing GSH Retail Ltd
To redeem your points, simply log into your account, view your available balance, and follow the on-screen instructions to generate a discount code. Enter the code at checkout to instantly apply your reward.
SLF-100 – Professional Enzymatic Cleaner for Hydroponic Systems & Root Zones
SLF-100 is a commercially proven enzymatic cleaner developed to maintain cleaner root zones, break down unwanted salt build-up, and improve system efficiency throughout the entire grow cycle. Backed by over 18 years of proven cultivation success, SLF-100 uses a proprietary blend of naturally occurring enzymes to keep hydroponic systems, irrigation lines, and soilless growing media clean and operating at peak performance.
This 100% organic and OMRI listed formula works immediately upon application to break down accumulated organic waste and nutrient residues without adding sugars, NPK, or unwanted additives into the root zone.
Advanced Enzymatic Salt Breakdown Formula
SLF-100 has been specifically developed to help break down and flush out unwanted salt accumulations that can build up within hydroponic systems, coco coir, and soilless growing media over time.
Excess salt build-up can negatively impact nutrient uptake, root health, and overall plant performance. SLF-100 helps maintain cleaner growing conditions by supporting the natural breakdown of these unwanted residues.
Keeps Hydroponic Systems Running Smoothly
Used as a professional system cleanser, SLF-100 helps keep reservoirs, irrigation systems, pipework, drip lines, and root zones cleaner and free from excessive organic and nutrient build-up.
Cleaner systems help maintain stable nutrient delivery, improved oxygen availability, and more efficient overall system performance throughout cultivation.
Breaks Down Organic Waste & Root Debris
The naturally occurring enzymes within SLF-100 rapidly target dead root matter and organic waste materials within the root zone and growing medium.
This enzymatic activity helps reduce the accumulation of toxic residues while supporting a healthier and more biologically balanced root environment.
Supports Improved Nutrient Uptake
By helping remove unwanted build-up and maintaining cleaner root conditions, SLF-100 supports improved nutrient absorption and nutrient efficiency.
Healthier root environments allow plants to access water, oxygen, and nutrients more effectively for stronger growth and improved overall plant performance.
Compatible with All Nutrient Programmes
SLF-100 integrates easily into virtually any nutrient programme or feeding schedule and is compatible with all plant types and growing styles.
The formula can be safely used alongside nutrients, fertilisers, rooting compounds, beneficial additives, and even hydrogen peroxide (H2O2) systems.
pH Neutral & Free from Added Sugars
Unlike many enzyme products, SLF-100 is pH neutral in concentrated form and contains no added sugars or NPK nutrients.
This allows growers to maintain stable nutrient formulations while keeping systems cleaner without affecting feeding ratios or nutrient balance.
100% Organic & OMRI Listed
SLF-100 is formulated using naturally occurring enzymes and is fully OMRI listed, making it suitable for organic cultivation practices and clean growing methods.
Its clean formula supports healthier root systems and more sustainable cultivation without introducing unnecessary additives into the growing environment.
Suitable for All Growing Systems
SLF-100 performs exceptionally well across a wide range of cultivation methods, including:
- Hydroponic systems
- Coco coir cultivation
- Soilless growing systems
- Recirculating systems
- Run-to-waste systems
- Drip irrigation systems
- Reservoir systems
- Indoor grow rooms and grow tents
- Commercial cultivation setups
Key Benefits of SLF-100
- Commercially proven enzymatic formula
- 100% organic and OMRI listed
- Helps break down unwanted salt build-up
- Keeps hydroponic systems and reservoirs cleaner
- Breaks down dead roots and organic waste
- Supports healthier root zones and nutrient uptake
- Compatible with all nutrient programmes
- Compatible with hydrogen peroxide (H2O2)
- pH neutral with no added sugars or NPK
- Suitable for all plant types and growing systems
How to Use SLF-100
Use SLF-100 throughout the entire grow cycle alongside your regular feeding programme to maintain cleaner systems and healthier root conditions.
- Reservoirs & Hydroponics: Add directly into nutrient solution according to system requirements
- Coco & Soilless Media: Use with regular watering or feeding schedules
- System Maintenance: Apply regularly to help prevent salt and residue build-up
Shake thoroughly before use and store in a cool, dry location away from direct sunlight.
Why Choose SLF-100?
SLF-100 is a professional-grade enzymatic cleaner trusted by growers worldwide for maintaining cleaner hydroponic systems, healthier root zones, and improved nutrient efficiency. With over 18 years of proven cultivation success, its powerful organic enzyme blend helps break down salts, dead roots, and unwanted residues while supporting healthier plants and smoother-running systems throughout the entire grow cycle.
