NH Bio CalMag Protect +
An elite foliar concentrate that bypasses exhausted roots to halt Calcium Tipburn and flip a yellowing canopy back to deep, marketable black-green — engineered for two completely different jobs.
Two Ratios. One Deep Green.
Green-up isn't about dumping magnesium on a leaf — it's about balance. CalMag Protect + locks two precise ratios so one nutrient never crowds another out.
The Chlorophyll Core
Calcium reinforces the middle lamella to mitigate Tipburn; Magnesium sits at the centre of every chlorophyll porphyrin ring. The ratio favours chloroplast rebuild — without triggering cationic lockout.
The Photosystem Balance
Iron assembles new chloroplasts; Manganese drives the water-splitting reaction of Photosystem II. The calibrated ratio delivers an intense green-up while preventing iron-induced Manganese lockout.
Target Crops
Built for Four Families
Compatible across the high-value commercial crops most exposed to tropical tipburn, chlorosis and flush exhaustion.
Asteraceae · Brassicaceae
Leafy Greens
Romaine, Iceberg, Cabbage, Kale, Bok Choy — the tipburn & green-up pathway.
Solanaceae
Nightshades
Bell pepper, chili, tomato, eggplant — post-harvest canopy reboot.
Solanaceae
Gourds & Melons
Cucumber, cantaloupe, honeydew, zucchini, squash — flush recovery.
Aromatic Herbs
Aromatic Herbs
Basil, mint, oregano — dense, deep-green continuous-cut canopies.
What Lands on Your Leaves
The exact parts-per-million delivered at the 3.0 mL per litre heavy-rescue rate — every active accounted for.
0.00% Nitrogen — salt-free, peptide-origin only · safe to spray straight through peak harvest
Precision Grower Dosing
Pick your sprayer and intent — get the exact pour and the live parts-per-million landing on your leaves.
The Triple-Threat Bio-Matrix
Competitors sell raw mineral salts. CalMag Protect + carries three synergistic biologicals that defend the canopy, fund its repair, and shield it from heat — the minerals are only half the story.
Active Marine Extracts
Packed with natural growth elicitors and mannitol — an internal osmoprotectant that holds cell turgor against 35°C+ heat, while signalling stalled apical meristems to keep dividing.
Heat Shield · Meristem Wake-UpMarine Bio-Elicitor
A macro-molecule the leaf mistakes for a fungal attack, tripping Systemic Acquired Resistance (SAR). The plant pre-loads phytoalexins to fortify against Cercospora leaf spot, Botrytis and powdery mildew.
SAR Trigger · Leaf-Spot DefenseBio-Active Peptides
Pre-built proteins delivered straight into stressed tissue — an organic Trojan Horse that drags heavy minerals through the stomata while funding the metabolic cost of healing pruning wounds and new growth.
Metabolic Funding · Wound RepairSpray the Window, Not the Sun
These biologicals absorb through open stomata. Hit the low-evaporation windows and the product sheets, locks in, and is rainfast within two hours.
The VPD Spray Window
Tap a time of day to see what happens to the leaf when you spray.
Interactive — tap to testEvery 10–14 days
Aim the nozzle straight down into the inner crowns and hearts where transpiration is lowest and Tipburn begins.
1 day after harvest, then every 4–5 days
Lightly coat the mid-to-upper canopy. Maximum 2–3 applications to reboot the vine before the next flush.
Locked in within 2 hours
Humectants and spreaders bind the film fast — but don't apply if heavy rain is expected inside that window.
Tank-Mixing & Compatibility
Mix water to pH 5.5–6.0 first. Slightly acidic spray water maximises cuticular penetration and protects the marine extracts from alkaline degradation.
What it mixes with
CalMag Protect + carries organic peptides and active marine extracts. Harsh chemical agents can denature these delicate complexes — always run the jar test before bulk preparation.
Fill a clean, transparent glass jar with 50% of your target spray water.
Add proportionate ratios of CalMag and your target agrochemical.
Wait 15 mins. Reject the mix if precipitation, cloudiness or heat spikes occur.
Frequently Asked Questions
No — this is strictly a foliar spray. Poured into the root zone it foams and can suffocate the roots, inducing root rot. Spray it directly onto the yellowing leaves instead, where it bypasses the exhausted root pathway entirely.
The dark colour comes from the pure marine biological extracts. The thickness is from botanical humectants, which stop the liquid flash-evaporating in tropical heat and extend the leaf-penetration window.
It targets interveinal chlorosis driven by Magnesium and micronutrient drain. With the 2.3:1 Ca:Mg core and the 3.5:1 Fe:Mn balance, growers typically see deep green-up within 48–72 hours, plus Tipburn progression halted in tightly folded crowns within 48 hours.
Spraying nitrogen onto a mature plant triggers unwanted leafy stretch and can stall fruit. Being salt-free and nitrogen-free (peptide origin only) makes CalMag Protect + safe to apply right through peak harvest.
No. Despite the raw biological extracts, a proprietary stabilisation matrix gives it a safe, multi-year shelf life at normal warehouse temperatures.
Post-Opening Storage & Care
Always protect biological compounds from atmospheric degradation. Follow these basic protection guidelines.
Sunlight Warning
Store cool, dry and well-ventilated. UV rays rapidly degrade the organic biological extracts.
Seal Tightly
Shake well before use, then reseal the cap immediately to keep ambient humidity from diluting the stabilisation matrix.
Prevent Cross-Contamination
Never dip dirty syringes or sticks into the master bottle. Always pour into a separate measuring vessel first.