Skip to product information
1 of 4
Plant Magic

Plant Magic Magne-Cal+ – Calcium and Magnesium Additive

Plant Magic Magne-Cal+ – Calcium and Magnesium Additive

Regular price £98.49
Regular price Sale price £98.49
Sale Sold out

£9.85 per litre · 10L

Taxes included. Shipping calculated at checkout.

In stock

Size
Secure checkout
  • American Express
  • Apple Pay
  • Bancontact
  • Bizum
  • Diners Club
  • Discover
  • Google Pay
  • iDEAL Wero

Order by 3pm Mon–Fri — we aim to post same day · FREE Express Delivery over £60 · 1–2 working days · Free Wembley pickup

  • 14-day returns
  • Price match promise
  • Free Wembley store pickup
  • Advice from the team: 020 3488 0419

Pairs well with

View full details

Description

Top up calcium and magnesium before a shortage costs you yield

Plant Magic Magne-Cal+ is a concentrated calcium and magnesium additive built to head off and make up the Ca/Mg shortages that regularly appear in hydroponics and indoor growing. Calcium and magnesium are essential secondary nutrients for root development, nutrient uptake and cell structure, so when they run short you typically see slow growth, weak stems, yellowing between the veins and disappointing flowering. It is especially useful in coco, hydroponic systems and soft water areas, where Ca and Mg are naturally less available, and it improves the effectiveness of PK boosters through bloom.

Key Benefits

  • Readily available calcium and magnesium for balanced, stable plant nutrition
  • Heads off and makes up Ca/Mg shortages common in coco and hydro
  • Stronger roots and improved nutrient uptake throughout the grow
  • Sturdier leaf structure and stronger stems for better light and load support
  • Boosts PK bloom performance, helping support heavier flowering
  • Suitable for soil, coco and hydroponic systems

Yellowing between leaf veins, weak stems and poor flowering

A cal/mag shortage is one of the most common issues indoors, showing as interveinal yellowing, weak stems, slow vegetative growth and poor flower development. Magne-Cal+ supplies these elements in a readily available form, restoring the balance and reinforcing cell structure so plants stay resilient and keep filling out through the flowering stage.

How to Use

  • Soil, coco and hydroponics: add 0.5-1ml per litre of water as part of your regular feed during the flowering stage
  • Shortage top-up: apply at the first signs of a Ca/Mg shortage to restore balance quickly
  • Mix thoroughly into the nutrient solution before feeding
  • Check EC and pH after adding, and adjust to suit your medium
Feed Chart
Plant Magic Magne-Cal+ · soil, coco and hydroponics
Stage Per 1 L Per 10 L
Ultimate programme — first three applications 0.5 ml 5 ml
Ultimate programme — the following four applications 1 ml 10 ml
Coco Essential programme — first three applications 0.5 ml 5 ml
Coco Essential programme — the following five applications 1 ml 10 ml
Note — Magne-Cal+ carries an asterisk on every Plant Magic chart, keyed to "IF USAGE REQUIRED" — Plant Magic treat it as conditional, not as a standard part of the programme. The final bloom column reads "plain water only". Check pH and EC after mixing.

FREE Express Delivery on orders over £60. We aim to post same day on Express Delivery — order by 3pm Mon–Fri — and delivery takes 1–2 working days. A few harder-to-stock or large, bulky items can take a little longer — we'll tell you if that applies to your order. Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.