(360) 800-5535 · Mon–Fri 9am–5pm PST
Earn 49 points for shopping and get $0.49 off your next order. Join Harvest Club for free.
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
Are you seeing yellowing leaves or stunted growth in your high-performance garden? The FloraFlex Cal + Mag + Iron supplement is a professional-grade solution designed to correct and prevent essential nutrient deficiencies. By providing a targeted boost of secondary minerals, this formula ensures your plants maintain peak cellular function and vibrant chlorophyll production throughout their entire life cycle.
This specialized supplement integrates seamlessly with FloraFlex 2-part base nutrient formulas, such as the FloraFlex Veg Nutrients Combo, and can be added to any existing feeding program. It is particularly critical for growers using reverse osmosis (RO) water, which lacks the natural minerals found in tap water, or those growing in inert media like coco coir and rockwool.
The liquid formulation offers maximum flexibility, allowing for both reservoir feeding and rapid-response foliar application. When used alongside the FloraFlex Foliar Spray Combo, it provides a comprehensive approach to maintaining plant health and correcting deficiencies before they impact your final yields.
Specifically addresses calcium, magnesium, and iron gaps in sterile systems.
Restores essential minerals stripped during the reverse osmosis process.
Apply via reservoir feeding or as a foliar spray for fast results.
| Specification | Value |
|---|---|
| Reservoir Dosage | 2-4 mL per gallon |
| Foliar Dosage | 15 mL per gallon |
| Key Nutrients | Calcium, Magnesium, Iron |
| Application Media | Coco, Rockwool, Hydroponics, Soil |
| Mixing Order | Add before pH adjustment |
Use this supplement when growing with RO water or as part of a FloraFlex Nutrients Starter Kit setup. It is also vital during rapid growth phases or when plants show signs of interveinal chlorosis (yellowing between veins).
Reverse osmosis removes almost all minerals, including calcium and magnesium. This supplement restores those critical elements to ensure your plants have the building blocks they need for structural integrity and energy production.
Yes. While designed to work with FloraFlex V1 and V2, it is compatible with most hydroponic nutrient programs where secondary nutrient supplementation is required.
Foliar application, similar to the FloraFlex Bloom Foliar method, allows for rapid uptake. You can typically expect to see improved leaf color and plant vigor within 3-7 days of application.
Always adjust your final solution pH after mixing all fertilizers and additives, including Cal + Mag + Iron. This ensures the final solution is in the optimal range for nutrient availability.
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
Equipping home growers, craft producers, and commercial operations across North America since 2016.