BioBizz

BioBizz CalMag

£4.45
Tax included. Shipping calculated at checkout.
Size: 250ml
Speak with us on WhatsApp

Pickup available at Sheffield store

Usually ready in 1 hour

Payment Methods
American Express
Apple Pay
Bancontact
Diners Club
Discover
Google Pay
iDEAL Wero
Maestro
Mastercard
PayPal
Shop Pay
Union Pay
Visa
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.

Size

BioBizz Calmag – Organic Calcium & Magnesium Supplement for Stronger, Healthier Plants

BioBizz Calmag is a high-quality organic calcium and magnesium supplement designed to correct nutrient deficiencies, strengthen plant structure, and support healthy growth throughout the entire cultivation cycle. Developed specifically for growers using soft water, reverse osmosis water, or coco coir substrates, Calmag provides the essential minerals plants need for vigorous growth, improved nutrient uptake, and optimal flowering performance.

Suitable for use in soil, coco coir, hydroponics, and all organic growing systems, BioBizz Calmag helps prevent common calcium and magnesium deficiencies while supporting healthier roots, greener foliage, and stronger overall plant development.

Prevents Calcium & Magnesium Deficiencies

Calcium and magnesium are essential secondary nutrients required for healthy plant growth and development. Deficiencies in either nutrient can lead to weak stems, yellowing leaves, nutrient lockout, and reduced growth performance.

BioBizz Calmag delivers these vital minerals in a highly available organic form, helping plants maintain balanced nutrition and preventing deficiency-related problems before they impact growth and flowering.

Strengthens Plant Structure & Growth

Calcium plays a key role in strengthening plant cell walls, supporting stronger stems, healthier roots, and improved structural development throughout the plant. Magnesium is essential for chlorophyll production and photosynthesis, helping plants produce the energy needed for vigorous growth and healthy flowering.

Together, these nutrients help plants develop stronger foliage, healthier root systems, and improved resistance to environmental stress.

Ideal for Soft Water & Reverse Osmosis Systems

Many water sources, especially soft water and reverse osmosis (RO) water, contain very low levels of calcium and magnesium. BioBizz Calmag is specifically designed to restore mineral balance when using purified or mineral-deficient water sources.

This makes it an essential supplement for growers using RO systems or growing in coco coir, where calcium and magnesium demand is typically much higher.

Supports Healthy Photosynthesis & Nutrient Uptake

Magnesium is the central element within chlorophyll molecules and is vital for efficient photosynthesis. By maintaining proper magnesium levels, BioBizz Calmag helps plants produce more energy, absorb nutrients more effectively, and maintain lush green foliage throughout the grow cycle.

Improved nutrient uptake and energy production support faster growth, healthier flowering, and increased crop quality.

Compatible with All Feeding Programmes

BioBizz Calmag is designed to work alongside virtually all nutrient schedules and cultivation methods, including:

  • Organic soil growing
  • Coco coir cultivation
  • Hydroponic systems
  • Indoor grow tents and grow rooms
  • Outdoor gardens and greenhouse cultivation
  • Hand-watered and automated irrigation systems

Its clean and balanced formulation integrates easily into existing feeding programmes without disrupting nutrient balance.

100% Organic & Environmentally Friendly

Unlike many synthetic Cal-Mag products, BioBizz Calmag is developed to support organic growing practices while maintaining healthy microbial activity within the root zone. Its environmentally friendly formula provides effective mineral supplementation without harsh synthetic additives.

This makes it ideal for growers focused on organic cultivation and long-term substrate health.

Key Benefits of BioBizz Calmag

  • Prevents calcium and magnesium deficiencies
  • Strengthens plant structure and root development
  • Supports healthy chlorophyll production
  • Improves photosynthesis and nutrient uptake
  • Ideal for soft water and reverse osmosis systems
  • Perfect for coco coir growing
  • Suitable for soil, coco, and hydroponics
  • Supports healthier foliage and stronger growth
  • Compatible with all nutrient programmes
  • Organic-friendly formula

How to Use BioBizz Calmag

Mix 0.3–1.4ml per litre of water depending on water softness and plant requirements. Use regularly throughout both vegetative growth and flowering to maintain optimal calcium and magnesium levels.

For reverse osmosis or very soft water systems, begin with lower dosages and adjust according to plant response and nutrient schedule.

Why Choose BioBizz Calmag?

BioBizz Calmag provides a reliable and effective solution for preventing calcium and magnesium deficiencies while supporting stronger, healthier plants throughout the grow cycle. Whether growing in soil, coco, or hydroponics, this organic-friendly supplement helps maintain balanced nutrition, healthier foliage, and improved plant performance from seedling through to harvest.