

SALE PROHIBITED TO PERSONS UNDER 18 - FREE SHIPPING FROM €40 (Mainland Spain only - Max. 25 Kg)
Alga Grow 250 ml. PLAGRON is an organic liquid fertilizer for the growth phase in indoor cultivation. The formula with seaweed extracts, amino acids, and beet vinasse promotes vigorous plants, strong stems, and balanced development.

Alga Grow 250 ml. PLAGRON is formulated to meet the nutritional needs of plants during the vegetative stage, from the appearance of the first true leaves to the beginning of flowering.
The combination of organic components provides nitrogen and other elements necessary to develop green leaves, firm branches, and a structure capable of facing the next phases of cultivation.
This growth fertilizer can be used in indoor crops with soil and organic substrates, offering gradual nutrition and easy integration into a feeding schedule.
The natural extracts present in the formula help improve the biological activity of the growing medium, while amino acids are involved in various processes related to plant metabolism.
The 250 ml format is practical for small crops, nutrition tests, young mother plants, or grow tents with a reduced number of specimens.
Due to the organic origin of several components, it is not recommended to use the product in automatic irrigation systems, as natural particles can accumulate in pipes, drippers, or narrow tubes.
Alga Grow 250 ml. PLAGRON is used to provide complete nutrition during the growth phase of indoor cultivated plants. In this stage, plants need an adequate supply of nitrogen to form plant tissues, increase leaf size, and develop new shoots.
Balanced feeding also helps create strong branches and a structure prepared to support the weight generated during flowering.
The product can be used when the plants have developed several pairs of leaves and have an active root system. Regular application helps maintain uniform growth, preventing the plant from relying solely on the nutritional reserves present in the substrate. It can also be used after transplanting, as long as the roots are adapted and there are no signs of over-fertilization.
This fertilizer is especially suitable for indoor soil cultivation and for nutrition programs based on organic products. The liquid formula makes it easy to prepare irrigation water and allows you to adjust the amount of fertilizer according to the size of the plant, light intensity, temperature, and the initial richness of the substrate.
The indicative dosage of Alga Grow 250 ml. PLAGRON is up to 4 ml per liter of water. The amount can be reduced during the first applications, especially when working with young plants, previously fertilized substrates, or specimens that still have a small root system.
To prepare the mixture, shake the container, fill the vessel with water, and add the corresponding dose. Then, stir the solution until a homogeneous distribution is achieved. The prepared mixture can be applied by manual watering, making sure to moisten the substrate evenly and avoiding excessive accumulation of water around the stem.
A common guideline is to alternate one watering with fertilizer and another watering with only water. This frequency should be adapted to the response of the plants, the drainage of the substrate, and the environmental conditions of the growing space. When the leaves show a very dark green or the tips begin to deteriorate, it is advisable to reduce the amount applied and review the rest of the nutrition program.
Use can be maintained during the vegetative phase and stopped at the beginning of flowering. At that time, Alga Grow can be progressively replaced by a specific flowering fertilizer. During the first weeks, it can also be combined with a compatible root stimulator, always following the instructions of each product and avoiding exceeding the recommended concentration.
As it contains organic extracts, it is not advisable to introduce the mixture into tanks that feed automatic systems for prolonged periods. Manual watering helps prevent blockages and allows the solution to be used immediately after preparation.
The composition of Alga Grow 250 ml. PLAGRON combines natural origin ingredients selected for the growth stage. Among the main components are seaweed extracts, beet vinasse, and amino acids.
Seaweed extracts provide different natural substances related to plant development and substrate activity. Beet vinasse comes from plant transformation processes and acts as a source of organic nutrients. Amino acids participate in the formation of proteins and in numerous metabolic processes necessary for growth.
The formula has a proportion of nutrients aimed at the vegetative phase, with a prominent presence of nitrogen. This element is involved in the formation of chlorophyll, leaves, shoots, and new tissues. A balanced availability of nitrogen promotes a uniform green color, although an excessive dose can cause leaves that are too dark, soft growth, or salt accumulation.
For this reason, the dosage should be adjusted progressively and taking into account the initial fertilization of the substrate. In enriched soils, it may be necessary to wait several weeks before starting liquid fertilization.
Alga Grow 250 ml. PLAGRON is a liquid organic fertilizer developed to feed plants during the growth period. It is part of the Plagron online fertilizer range and is designed for growers looking for natural origin nutrition compatible with soil and organic substrates.
The product acts as a base growth fertilizer, so it provides the main nutrients needed before the flowering stage. It should not be confused with a stimulator or a one-off corrector. The main function is to maintain constant feeding while roots, leaves, stems, and branches are formed.
The 250 ml container makes precise dosing easy and takes up little space in the growing area. Applying 4 ml per liter, the content allows you to prepare approximately 62 liters of nutrient solution. The yield can increase when lower doses are used during the first weeks.
One of the main benefits of Alga Grow 250 ml. PLAGRON is its ability to provide nutrition adapted to vegetative growth. The formula promotes the formation of large leaves, new shoots, and a branched structure, important elements to make the most of the available lighting in indoor cultivation.
The presence of amino acids and plant-based materials helps maintain constant metabolic activity. In addition, a strong structure allows for transplants, pruning, training, and other techniques used to control height and distribute branches inside the grow tent.
The concentrated format allows you to prepare numerous waterings with a small amount of product. It also facilitates combination with other products from Plagron's organic line, as long as the total doses remain within appropriate values.
Among the most notable advantages are organic nutrition for growth, strengthening of stems and branches, improved leaf development, ease of dosing, and compatibility with soil crops. Proper use helps prepare balanced plants before the change of photoperiod.
The price of Alga Grow 250 ml. PLAGRON can be consulted on the Hydroponics Blanes product page. The small format allows access to a concentrated growth fertilizer without the need to purchase a larger container.
The cost per watering will depend on the dose used and the volume of water prepared. With a maximum application of 4 ml per liter, the container offers adequate performance for small grow tents, plants in the initial phase, or crops that need a short vegetative period.
In the Plagron online fertilizer catalog you can also find products for rooting, flowering, stimulation, and parameter control. Choosing compatible products within the same range helps organize a coherent nutrition schedule throughout the cycle.
It is possible to buy Alga Grow 250 ml. PLAGRON at Hydroponics Blanes, a trusted Grow
Customers who bought this product also bought: