Free Shipping Store Wide

Get In Touch

Cal-Mag Hydroponic Nutrients Fertiliser

$29.90 – $46.70

High-strength CAL-MAG for fast-growing, heavy-feeding plants.

✅ Chelated Calcium & Magnesium for rapid absorption
✅ Helps prevent blossom end rot, tip burn & stunted growth
✅ Double the strength of standard Cal-Mag formulas
✅ Used by commercial hydroponic growers

Select Amount (Litre)

Clear

Australian Owned & Manufactured

Free Shipping

Boost Plant Growth

Description

CAL – MAG

NPK 4-0-0

Our Complete Grow CAL-MAG is made from a special blend of chelates and mineral nutrients for effective and fast absorption by plants.

Analysis

🧪 Calcium – 6%
🧪 Magnesium – 2%
🧪 Iron EDTA – 0.1%
🌿 Plus all trace minerals

Complete Grow Cal-Mag is a concentrated Chelated Calcium and Magnesium solution which improves the overall health of the plants. It assists fast-growing and heavy-feeding plants to uptake the required nutrients. It also helps prevent blossom end rot, tip burn, poor setting, and stunted growth.

Double the strength of other Cal-Mag products. Made and used by commercial hydroponic farmers using high-grade chelated fertiliser.

Direction

Apply 0.5 to 1ml per litre of water. Can be used in both grow and flower stages.

Cal-Mag Hydroponic Nutrients Fertiliser

Double-strength Cal-Mag fertiliser made with chelated Calcium, Magnesium, and Iron for fast-growing plants. Prevents common deficiencies like blossom end rot and tip burn. Ideal for hydroponics or soil. NPK 4‑0‑0. Trusted by commercial growers. Free shipping Australia-wide.

High-strength Cal-Mag formula for fast-growing plants
✅ Chelated Calcium & Magnesium for rapid absorption
✅ Prevents blossom end rot, tip burn & stunted growth
✅ Twice the strength of standard Cal-Mag formulas
✅ Suitable for hydroponics & soil-based systems
✅ Made in Australia – trusted by commercial growers

Prevents Blossom End Rot & Tip Burn

Supports Strong Growth & Nutrient Uptake

Mix 0.5–1ml per litre of water

Feed Your Plants

Watch Them Thrive

Noticed healthier growth within a week. I use it in all my garden bed soils. very fast shipping have also used there all purpose liquid fertilizer combined with this have been seen great results

Ben R

Verified Buyer

This is a great fertiliser, have used for 2 weeks now and can see very good growth taking place .Will definitely get this again. I have very poor dirt where i live so this has helped my plants alot

Chloe M

Verified Buyer

What does Cal-Mag do for plants?

It supports cell strength, prevents deficiencies like blossom end rot or tip burn, and improves nutrient uptake in fast-growing crops.

How is this different from other Cal-Mag products?

This formula is double strength and uses chelated minerals for faster, more effective absorption. You need less to see better results.

Is it safe for hydroponics?

Yes – it’s made for commercial hydroponics and works great in any system: NFT, DWC, coco, soil or drip setups.

Can I use it during flowering?

Absolutely. It’s designed to be used in both veg and flower stages to support calcium and magnesium needs throughout the plant’s life cycle.

The Grow Blog: News, Tips, & Stories

316346594_5254694071302190_5104578222216026391_n

Jun