Easy product returns
Buy a product and check it in your own time, at home.
You can return the product without providing a reason within 14 days.
Show details
You can return the product without providing a reason within 14 days.
14 days to withdraw from the contract
Your satisfaction is very important to us, therefore you can make a return without providing a reason within
14
days.
No stress and worry
Thanks to the integration with cheap returns you can purchase without stress and be sure that the return process will be hassle free.
Easy returns wizard
All returns processed by our shop are managed in a easy-to-use returns wizard which gives you the ability to send a return parcel.
Cannaboom Calmagsi 5 L - mixture of calcium, magnesium, nitrogen, iron and silicon for better plant growth
Cannaboom Calmagsi supports healthy plant development by enhancing their structure, resistance to diseases, and nutrient absorption. This specialized fertilizer supplies essential calcium, magnesium, and silicon, which are vital for plant growth and resilience to stress, ultimately leading to better yields.
How to use Cannaboom Calmagsi?
- Irrigation: 1-2 ml per liter of water.
- Foliar spray: 1 ml per liter of water when deficiencies are visible.
- Use from the beginning to prevent nutrient deficiencies.
- Foliar applications should be done in low light to avoid plant burns.
CalMagSi can be mixed with enzymes or N-P-K fertilizers without exceeding weekly EC limits.
Contain:
COMPOSITION | w/w | w/v |
Nitrogen (N) | 2,49% | 2,33% |
Calcium (Ca) | 3,00% | 2,80% |
Magnesium (Mg) | 1,00% | 0,95% |
Silicon (SiO2) | 4,00% | 3,70% |
Iron (Fe) | 0,10% | 0,09% |
Density 1,07 g/cc
pH 5,65
Tech specs:
Type of nutritions: | Mineral |
Life phase: | bloom ,
grow |
Type of cultivation: | Soil ,
Coco ,
Hydroponics |
phase application: | Trace elements |
Capacity (L): | 5 |
Users reviews
Check also

Cannaboom Boomrapid Fullcrem 1 L - growth fertilizer with high NPK
13,42 €
BOOM RAPID is a special fertilizer for the growth phase that contains a high concentration of NPK.

Cannaboom Bang X5 600ml - natural protection of plants against fungi, gray mold and mildew
53,44 €
Bang X5 is a natural antifungal solution designed to protect plants from various fungi, such as powdery mildew, botrytis, and downy mildew. Its formula, made from plant-based lipids, helps strengthen the plant’s natural defenses.

Cannaboom Terpenum 5L- terpene enhancer, increase aroma and flavor
194,96 €
TERPENUM is an excellent thricome enhancer. It induces the plant to produce the maximum resin that will create a layer and impregnate buds and leaves, making the latter completely usable and producing flowers with the maximum flavor and aroma

Cannaboom Super Boom Compactor 390g - Bloom Enhancer to obtain more compact and heavy flowers
85,16 €
SUPER BOOM COMPACTOR: allows you to obtain more compact and heavy flowers, with more sugar, essential oils and aroma. It has more than 40 ingredients, some of which have never been used before in this sector.

Update Required
To play the media you will need to either update your browser to a recent version or update your Flash plugin.