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CalMag Pro LED 1 Liter 33PRO is a mineral supplement formulated to reinforce nutrition in cannabis cultivation under LED lighting. It provides calcium, magnesium, and essential microelements, helping to prevent common deficiencies and maintain balanced development in indoor cultivation.

The use of LED lighting has changed the nutritional needs of cannabis, making the specific supply of calcium and magnesium essential. CalMag Pro LED 1 Liter 33PRO, within the 33pro Fertilizers range, acts as a corrector, revitalizer, and continuous Cal-Mag supplement.
This formulation is designed for coco, hydroponic, or soil crops, easily integrating into existing fertilization programs.
The product helps improve the absorption of base NPK, stabilizes plant metabolism, and reduces problems caused by ionic imbalances common in LED systems.
CalMag Pro LED 1 Liter 33PRO is a mineral fertilizer designed to meet the specific demands of calcium and magnesium in cannabis crops subjected to high light intensity. The formulation includes microelements such as iron, zinc, or manganese, essential for maintaining photosynthesis and cell structure.
This product falls within the bio fertilizers for nutritional support, offering a practical solution to prevent chlorosis, structural weakening, or nutrient lockouts. It is especially useful for those looking for cheap fertilizers for cannabis compatible with professional feeding schemes.
The application of CalMag Pro LED 1 Liter 33PRO adapts to different goals within the crop. It can be used as a weekly corrector to restore nutritional balance, as a punctual revitalizer after stress episodes, or as a continuous Cal-Mag supply in each watering.
The product is diluted directly in the irrigation water, adjusting the dose according to the desired effect. It is compatible with usual fertilization programs in indoor cultivation and with other brands on the market. Shake before use and suspend application during the last two weeks of flowering to promote ripening.
The composition of CalMag Pro LED 1 Liter 33PRO includes nitrogen, calcium oxide, magnesium oxide, and a set of essential microelements such as boron, copper, iron, manganese, molybdenum, and zinc. This combination promotes nutritional stability and proper assimilation of the main elements.
The product has an approximate pH of 5.0, maintaining stability of the chelated fraction over a wide pH range, which facilitates use in different cultivation systems without altering the substrate balance.
The price of CalMag Pro LED 1 Liter 33PRO makes it an affordable option within the catalog of mineral supplements for cannabis. It is an interesting alternative for those looking for cheap fertilizers for cannabis without giving up a technical formulation adapted to LED lighting.
This product is available at Hydroponics Blanes, a trusted Grow Shop specialized in nutrition and equipment for cannabis. As a Grow Shop in Spain, it offers technical advice, discreet shipping, and a complete catalog to buy fertilizers online safely.
CalMag Pro LED 1 Liter 33PRO fits perfectly into cultivation programs aimed at nutritional stability under LED. Integrated alongside other 33pro Fertilizers, it helps maintain vigorous plants, with an active metabolism and balanced nutrient absorption throughout the cycle.