Description

Support strong, vibrant plants with Shogun CalMag, a premium calcium and magnesium additive designed to prevent deficiencies, improve nutrient uptake and strengthen plant cell structure. Ideal for soil, coco coir and hydroponic systems, Shogun CalMag ensures your plants have the essential minerals they need for healthy growth, robust stems and lush foliage.

Read the full product details here...

Used by growers to maintain optimum plant health, this supplement helps maximise growth potential while reducing the risk of common nutrient-related issues.

Shogun CalMag provides a balanced supply of calcium and magnesium, two critical secondary nutrients required for strong cell walls, improved photosynthesis and overall plant resilience. Deficiencies in these nutrients can lead to leaf curl, blossom end rot, yellowing leaves and poor growth.

This liquid additive is easy to use, fully water-soluble and compatible with a variety of nutrient programs, making it a versatile solution for maintaining nutrient balance and supporting healthy plant development from seedling to harvest.

Key Features & Benefits

  • Prevents Calcium & Magnesium Deficiency: Supports strong stems, healthy leaves and flower/fruit development.
  • Enhances Nutrient Uptake: Improves the efficiency of other nutrients in your feeding program.
  • Supports Robust Growth: Promotes overall plant health, resilience and vigour.
  • Compatible with All Grow Mediums: Works in soil, coco coir and hydroponic systems.
  • Easy-to-Use Liquid Formula: Mixes seamlessly into your nutrient solution or irrigation water.
  • Safe for Plants: Balanced formulation reduces the risk of nutrient burn or imbalance.
  • Versatile Application: Suitable for all stages of plant growth, from seedlings to flowering.

How to Use

  • Shake well before use.
  • Mix 1 to 3 ml per litre of water depending on plant size and growth stage.
  • Apply during watering or as part of your regular nutrient feed.
  • Use throughout the vegetative and flowering stages as required.
  • Adjust pH after mixing nutrients if necessary.

Frequently Asked Questions (FAQ)

What is Shogun CalMag used for?
It supplies essential calcium and magnesium to prevent deficiencies and promote strong plant growth.

Can I use it with all growing mediums?
Yes, it is compatible with soil, coco coir and hydroponic systems.

Is Shogun CalMag safe for seedlings?
Yes, use lower concentrations for young plants to support early growth without risk of nutrient burn.

Can I mix it with my existing nutrients?
Yes, it integrates seamlessly into your regular nutrient program.

When should I apply it?
Apply as needed throughout the vegetative and flowering stages to maintain optimal calcium and magnesium levels.

Calcium and magnesium are vital for healthy plant structure, efficient nutrient uptake and strong flowering or fruiting. Shogun CalMag ensures your plants receive these essential minerals in the correct balance, preventing deficiencies that can stunt growth or reduce yield. By supporting robust cell walls, improved photosynthesis and overall plant vigour, this supplement helps growers achieve healthier, more productive plants and higher-quality harvests.

Explore the range

See all Additives & Boosters (153)

Not sure which one is right for your setup? Message us on WhatsApp or call 0121 553 7872.

Delivery, returns and FAQs

Will my order arrive in plain packaging?

Yes. Every order is sent in plain, unbranded packaging as standard.

How quickly will my order arrive?

Order standard size items by 12pm on a working day and choose Next working day at checkout, and your order will be with you the next working day. Standard delivery takes 2 to 3 working days.

Bulky items such as grow tents, large fans and 50L bags of soil go by courier in 2 to 3 working days, or on a pallet for very heavy orders. Next day is not available for these, and if your basket includes a bulky item the whole order travels with it.

UK delivery is free on orders of £94.99 or more, except for bulky items. See our delivery page for full prices.

Can I collect from the shop?

Yes. Choose Click & Collect at checkout and pick up for free from our shop at Unit 2 Black Lake, West Bromwich, B70 0PJ. Orders are usually ready within 1 hour.

Can I return an item?

You have 14 days from receiving your order to tell us you want to cancel, then a further 14 days to send it back. Items need to be unopened and in a resaleable condition.

If you change your mind, the return postage is paid by you. If something arrives faulty or damaged, send us photos within 48 hours and we will cover the cost of putting it right. Full details are in our refund policy.

Do you price match?

Yes. If you find the Shogun CalMag Calcium & Magnesium Additive cheaper at another UK retailer, use the Price Match button on this page. We usually reply within one business day.

Need help choosing?

Speak to our team. Call us on 0121 553 7872, message us on WhatsApp, or visit the shop in West Bromwich.

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