Advanced Nutrients OG Organics Sensi Cal-Mag Xtra

Product detailed description

OG Organics Sensi Cal-Mag Xtra from Advanced Nutrients is an organic supplementary fertiliser that provides plants with secondary nutrients - calcium and magnesium - plus chelated iron. It is suitable for growers running a fully organic cycle who want protection against the typical signs of calcium and magnesium deficiency.

What it contains and why it works

Both calcium and magnesium are in chelated form, so the plant can absorb them easily. The added chelated iron is a micronutrient that most Cal-Mag supplements leave out, and seaweed provides amino acids and trace elements. The entire OG Organics range is certified OMRI and CDFA-OIM, so you can use this product in fully organic cultivation too.

Dosage and use

You can use Cal-Mag Xtra in vegetative growth and in bloom - it is suitable for every medium and every form of feeding. It is most often used as protection with soft or reverse osmosis water and in coco, which binds calcium and magnesium. However, the manufacturer does not state the exact organic dosage in ml per litre on the official page, so we are not anticipating it here; follow the label on the pack and the official dosage chart.

Where it fits in the AN range

Cal-Mag Xtra complements the organic bases Iguana Juice Organic Grow for vegetative growth and Iguana Juice Organic Bloom for bloom. There is also a mineral version, Sensi Cal-Mag Xtra, for growers using salt fertilisers - both address the same deficiency, just in a different way, so do not confuse them according to the medium and cultivation regime.

Frequently asked questions

When should I use Cal-Mag Xtra and how do I know the plant needs it?
Cal-Mag is a supplement that is especially useful where water or medium do not supply enough calcium and magnesium. Typically with reverse osmosis or soft water and in coco. Deficiency shows on young and older leaves - curling, paling or browning at the edges. Use it in vegetative growth and in bloom as part of regular feeding.

Do I need to deal with Cal-Mag in coco too?
Yes, we recommend it. Coco fibre actively binds calcium and magnesium, so the plant gets them less easily from standard nutrition. Added Cal-Mag Xtra balances this deficiency and also supplies chelated iron. It is used in vegetative growth and in bloom and complements both organic and mineral bases.

Is the organic version better than the classic mineral one?
Neither better nor worse - it is different. The organic OG Organics version is intended for fully organic cultivation and carries OMRI and CDFA-OIM certification. The mineral Sensi Cal-Mag Xtra addresses the same calcium and magnesium deficiency, but through salt nutrients. Choose according to whether you are running an organic or mineral programme - combining both versions makes no sense.

You can find the exact dosage for each range in the Advanced Nutrients dosage chart.