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CO2 Pro LED 1 Liter 33PRO is a liquid biostimulant developed to enhance plant metabolism in cannabis cultivation under LED lighting. It acts on photosynthesis and cellular respiration, promoting active growth and balanced flowering in indoor cultivation.

The use of LED lighting modifies the behavior of the substrate and the dynamics of nutrient absorption. CO2 Pro LED 1 Liter 33PRO, within the 33pro Fertilizers range, has been formulated to stimulate metabolic and root activity, even in conditions where the substrate tends to dry more slowly.
Thanks to fulvic extracts and metabolic activators, this product increases the plant's water and nutrient demand, a clear indicator of an active metabolism.
It integrates easily into existing fertilization programs and is compatible with LED, HPS, or CMH systems.
CO2 Pro LED 1 Liter 33PRO is a universal biostimulant for growth and flowering phases, designed to optimize the efficiency in the use of available CO₂ in the growing environment. The formulation stimulates cellular respiration and improves photosynthesis, allowing plants to make better use of light and nutrients.
This product is positioned as a supplement within bio fertilizers, aimed at growers seeking to improve metabolic performance without altering the basic fertilization structure. It is especially interesting for those looking for cheap fertilizers for cannabis adapted to the current demands of indoor cultivation.
The application of CO2 Pro LED 1 Liter 33PRO is done through irrigation water, diluting 20 ml per 100 liters along with the rest of the usual fertilizers. It is important to add the product after the silicate and the nutrient bases, ensuring proper integration into the solution.
Continuous use increases transpiration and the consumption of water and nutrients, promoting a more uniform drying of the substrate. It is recommended to suspend application during the last two weeks of flowering. Dosages can be adjusted according to genetics, environmental conditions, and crop response, always maintaining active observation of plant development.
The composition of CO2 Pro LED 1 Liter 33PRO is based on an NK solution enriched with fulvic acids. It includes nitrogen in different forms—nitric, ammoniacal, and ureic—along with potassium, key elements to support an active metabolism and proper nutrient assimilation.
The high content of fulvic acids promotes the biological activity of the substrate, stimulating interaction with mycorrhizae and Trichoderma. The product has a pH between 5 and 6, an approximate density of 1.28 g/cm³, and total solubility in water, facilitating use in different cultivation systems.
The price of CO2 Pro LED 1 Liter 33PRO makes it an accessible option among liquid biostimulants for cannabis. It is an interesting alternative for growers looking for cheap fertilizers for cannabis with a technical approach adapted to LED lighting.
This product is available at Hydroponics Blanes, a trusted Grow Shop specialized in nutrition and cultivation systems. As a Grow Shop in Spain, it offers professional advice, discreet shipping, and a wide catalog to buy fertilizers online safely.
CO2 Pro LED 1 Liter 33PRO fits into cultivation programs aimed at maximizing metabolic efficiency under LED. Integrated alongside other 33pro Fertilizers, it promotes plants with greater activity, a more dynamic irrigation rhythm, and a visible plant response in both growth and flowering.