Description

Prevent nutrient deficiencies and support strong, resilient plants with Monkey Mag Cal, a high-quality calcium and magnesium additive designed for use in soil, coco and hydroponic systems. By providing these critical secondary nutrients, Monkey Mag Cal helps strengthen stems, improve leaf health and optimise nutrient uptake for vigorous growth and maximum yields.

Read the full product overview here...

Monkey Mag Cal supplies plants with readily available calcium and magnesium, two essential nutrients required for robust structural growth, chlorophyll production and efficient photosynthesis. Calcium supports cell wall formation and root development, while magnesium is vital for chlorophyll synthesis, ensuring your plants can produce energy effectively.

This supplement is especially useful in soft water areas or when using reverse osmosis (RO) water, where natural calcium and magnesium levels may be insufficient. Easy to mix and integrate with base nutrient programs, Monkey Mag Cal ensures consistent plant performance throughout all growth stages.

Key Features & Benefits

  • Prevents Deficiencies: Supplies essential calcium and magnesium in a readily absorbable form.
  • Supports Vigorous Growth: Strengthens stems, roots and overall plant structure.
  • Improves Nutrient Uptake: Enhances absorption of macro- and micronutrients.
  • Versatile Application: Suitable for soil, coco coir and hydroponic systems.
  • Easy to Use: Simple to add to your nutrient solution without complex preparation.
  • Compatible with Base Nutrients: Works seamlessly with Monkey Grow A & B or other nutrient programs.
  • Supports All Growth Stages: Useful from seedling through flowering to ensure healthy development.

How to Use

  • Shake well before use.
  • Dosage: Add 1 to 3 ml per litre of water, adjusting based on plant size and water quality.
  • Frequency: Apply regularly during vegetative and flowering stages, or when calcium or magnesium deficiencies appear.
  • Mixing: Combine with your base nutrients, ensuring even distribution and proper pH.

Frequently Asked Questions (FAQ)

When should I use Monkey Mag Cal?
Apply throughout the entire growth cycle, particularly in soft water areas or when using RO water.

Can it be used with all grow mediums?
Yes, fully compatible with soil, coco coir and hydroponic systems.

Does it replace a base nutrient system?
No, Monkey Mag Cal is an additive to supplement your existing nutrient program.

Will it work in hard water?
Yes, effective in both soft and hard water, but particularly beneficial where calcium and magnesium are naturally low.

Calcium and magnesium are essential secondary nutrients that directly affect plant strength, leaf health and nutrient efficiency. Monkey Mag Cal ensures your plants have a steady supply of these nutrients, reducing the risk of deficiencies that can stunt growth or reduce yields. By supporting structural integrity and improving nutrient uptake, it helps growers achieve stronger, healthier plants with optimal growth and higher-quality harvests, making it an indispensable addition to any serious cultivation setup.

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 Monkey Mag Cal 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.

You may also like

Recently viewed