Advanced Nutrients Sensi Cal-Mag Xtra

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Standard Delivery £6.95*
Free Delivery - orders +£65 Free Delivery - orders +£65
Plain Packaging Used Plain Packaging Used
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Product Name Qty Price
Advanced Nutrients Sensi Cal-Mag Xtra - 250ml
Advanced Nutrients Sensi Cal-Mag Xtra - 1L
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Advanced Nutrients Sensi Cal-Mag Xtra is a new and improved supplement that supersedes the now classic Sensi Cal Mag, as it not only contains calculated levels of Calcium (Ca) and Magnesium (Mg), but also contains correct amounts of Iron (Fe) and 20 L-form amino acids, that many of other available Cal-Mag supplements are lacking.

If you’re not using the Advanced Nutrients base feeds, which have the correct levels of Calcium (Ca), Magnesium (Mg) and Iron (Fe), your plants could suffer from deficiencies and not reach their optimum levels of health and yield.

Using Sensi Cal-Mag Xtra will overcome these issues, help your plant with the uptake of food and promote vigorous growth, healthy fruits and amazing harvests.


  • Hydroponics: 2ml per litre to correct deficiencies, repeat after 1 week, if necessary.
  • Foliar Spray: 2ml per litre, repeat after 1 week, if necessary.
  • Regular Feeding Program: 2ml per litre, repeat after 1 week, if necessary.


Read on our blog: The Importance Of Using CalMag Supplements

Delivery & Returns
Free Delivery
We are pleased to offer free standard shipping to UK Mainland on all orders over £65.00 *Heavy item surcharges are still applicable.
Next Day Delivery
In a hurry for your order? Order before 1 pm Mon - Thurs for next working day delivery *subject to stock availability T&C's apply.
Different delivery address?
Do your goods need shipping to an alternative address? If so, paying by bank transfer gives you the freedom to have them delivered to anywhere in the UK.
Free Returns
Faulty or damaged item? No problem, contact us on 0800 038 7100 or email customer service and we can arrange a free collection.
Plain Packaging
All parcels, no matter how big or small, are dispatched in plain packaging using black wrap that's secured using 'fragile' tape.
How to Pay
Credit / Debit Cards
We accept all major credit and debit cards (excl. American Express) All transactions are processed using a secure server via SagePay. Please note: When paying by credit card we can only ship to the card statement address.
Simply select this option at checkout if you prefer to pay through PayPal. Please note: When paying by PayPal, we can only ship items to the account owners confirmed address.
Banks Transfer
Select the option for Bank Transfer at checkout if you wish to receive your item anywhere within the UK. Please use your order number as payment reference.
Click & Collect
Collect your online orders in as little as under an hour*! Simply pay online, choose location & collect in-store for free! Available from Manchester & Huddersfield (*subject to stock availability).
Brand Advanced Nutrients
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