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Calmag Boom
€3.74
€4.68
20%
4.94/5
(17 Ratings)
Boom Nutrients expands its catalogue of nutritional supplements with Calmag Boom. This additive provides nitrogen, calcium and magnesium. Suitable for all growth mediums, both indoors or outdoors.
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Description
Calmag Boom by Boom Nutrients is an excellent nutritional supplement based on nitrogen, calcium and magnesium. This liquid format can be used to correct the deficiencies of these micro-elements in indoor and outdoor grows and also to reconstitute osmotic water and complement fertilizers when using coco coir.
This product is compatible with any growth medium or irrigation system (drip or automatic) as there is no risk of pipe blockage. In order to increase water’s EC when using distilled or osmotic water, add Calmag Boom until levels increase to 0.4. For better accuracy, you can use professional tools like a digital Adwa EC Meter. If on the contrary, its use is aimed at sorting out calcium and magnesium deficiencies, then the dosage is 1-2 ml per liter of water. Such deficiencies can be observed in small spots that show up in the leaves when they are getting dried and breaking.
Calmag Boom, Great Quality Additive
One of the main benefits of Boom Nutrients' new additive is its precise content in essential amino acids such as calcium and magnesium. When using distilled water, it’s quite possible that the grow will have nutritional deficiencies, therefore Calmag is the perfect ally to promote plants’ healthy development.
Calcium is a very important secondary nutrient as it’s an essential element for the cell tissue of roots to develop properly. It also helps assimilate nutrients by degrading organic matter and contributes to the formation of proteins that increase plants resistance towards thermal stress. On the other hand, magnesium is the micro-element responsible for the production of chlorophyll, sugars and carbohydrates.
Plants can suffer deficiencies when they don’t receive the correct amount of essential nutrients, therefore, prevention is better than cure and Calmag Boom is a good solution. Calmag Boom’s composition is formed by 100% water soluble macro and micro nutrients and it can be applied to different growth mediums, whether a peats mixture, coco coir, hydroponics or aeroponics, both indoors or outdoors.
How to use Calmag Boom by Boom Nutrients
Irrigation application:
- Add 1-2 ml/L to irrigation water.
- Dose can be adjusted to suit the requirements of each dose, as long as EC levels are under control.
- Always use good quality water and with correct pH levels.
- Alternate with foliage application for fast results.
Calmag Boom composition:
- NPK: 2-0-0
- Nitrogen: 2%
- Calcium: 3%
- Magnesium: 1%
Available formats:
- 250 ml
- 1 L
- 5 L
- 10 L
- 20 L
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13/10/2025
Does the job, but I've used others that gave me similar results for a lower price. It's fine to try it out.
Translated from Spanish
Cumple su función, pero he usado otros que me daban resultados parecidos a menor precio. Para probar está bien.
09/10/2025
Perfect for stabilising my tap water. My autoflowering plants look super healthy.
Translated from Spanish
Perfecto para estabilizar el agua de mi grifo. Mis autoflorecientes lucen sanísimas.
05/10/2025
Good supplement. You can tell the extra strength it gives the plants. The only thing is the bottle is a bit small if you grow a lot.
Translated from Spanish
Buen complemento. Se nota el extra de fuerza que le da a las plantas. Lo único es que la botella es un poco pequeña si cultivas mucho.
04/10/2025
Good stuff to start with, you can tell the extra boost. Mind you, always with a pH and EC meter so you don't overdo it, which is easy to do.
Translated from Spanish
Buen material para empezar, se nota el aporte extra. Eso sí, siempre con medidor de pH y EC para no pasarse, que es fácil.
03/10/2025
How do you combine it with the rest of the nutrients? If I give them this, do I have to reduce the base nutrients a bit? It's my first time using it.
Translated from Spanish
¿Cómo se compagina con el resto de nutrientes? Si le doy esto, ¿tengo que reducir un poco los abonos base? Es mi primera vez usándolo.
02/10/2025
Dissolves great and the plants absorb it quickly. For me, one of the best Calmag on the market right now.
Translated from Spanish
Se disuelve genial y las plantas lo asimilan rápido. Para mí, de los mejores Calmag que hay ahora mismo en el mercado.
12/09/2025
Incredible difference I've noticed in the leaves, thicker and without curled tips. Now the plants are growing with more strength.
Translated from Spanish
Increíble la diferencia que he notado en las hojas, más gordas y sin puntas dobladas. Ahora las plantas tiran con más fuerza.
04/09/2025
Works pretty well for deficiencies during flowering. The only downside is that the label doesn't explain the doses for each phase very clearly.
Translated from Spanish
Funciona bastante bien para las carencias en floración. La única pega es que la etiqueta no explica del todo bien las dosis para cada fase.
25/08/2025
Hello, should I use it at every watering or can I alternate with plain water? I'm using it and it's working great, the leaves aren't turning yellow anymore.
Translated from Spanish
Hola, ¿hay que usarlo en cada riego o se puede intercalar con agua sola? Lo estoy usando y me va de lujo, las hojas ya no se amarillean.
21/08/2025
With soft water it's a must-have. My coco plants really appreciate it, zero issues with calcium or magnesium.
Translated from Spanish
Con aguas blandas es un imprescindible. Mis plantas de coco lo agradecen un montón, cero problemas de calcio o magnesio.
07/08/2025
Top. My plants are super green, not a single deficiency since I added it to the watering. Recommend it to everyone.
Translated from Spanish
Top. Mis plantas están verdes a tope, ni una carencia desde que lo metí en el riego. Lo recomiendo a todo el mundo.
01/08/2025
Essential for LED grows! Intense light sometimes causes deficiencies and this fixes it easily. Very happy.
Translated from Spanish
Esencial para cultivos con LEDs! La luz intensa a veces provoca carencias y con esto se solventa fácil. Muy contento.