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Black Square Pot 25 Liters is a spacious and stable container of 34 x 34 x 34 cm made of black plastic with a raised bottom and drainage holes. Designed for indoor cultivation, it promotes oxygenated roots, precise watering, and efficient organization in trays and technical tables.

The Black Square Pot 25 Liters stands out for its generous volume that allows the development of a powerful root system in cannabis cultivation projects and demanding aromatic plants. The dimensions 34 x 34 x 34 cm offer a wide base for heavy canopies and stability in production rooms.
The raised bottom creates an air chamber under the substrate; excess water quickly flows to the drainage holes, preventing waterlogging and promoting root respiration.
The interior incorporates anti-spiraling grooves that guide root growth downward and sideways, forming a uniform and efficient root ball for the assimilation of water and nutrients.
The body in black plastic limits light entry to the rhizosphere, reduces algae, and helps preserve beneficial microbiology.
The square format maximizes space use in indoor cultivation facilities, as it allows pots to be aligned in regular grids inside trays or on irrigation tables, improving the use of square meters under LED or HPS.
Ideal as a final container for medium and tall cannabis plants, or for long-term crops that require additional water reserve.
At Hydroponics Blanes, online grow shop and trusted Grow Shop, this pot integrates with indoor accessories (collector trays, SCROG nets, stakes, and drip lines) and control tools (pH/EC). Catalog with discreet shipping throughout Spain to meet the needs of hobbyists and professionals.
The 25 L volume provides margin for watering and nutrition in intensive cycles. The 34 x 34 cm base facilitates handling aisles and stability for dense canopies. The 34 cm height creates a balanced substrate column that combines water retention with aeration, key to avoiding compaction in high transpiration environments.
It serves as a final container in indoor crops seeking yield and consistency, especially with highly vigorous varieties. The real volume of 25 liters allows for longer cycles between waterings without losing oxygenation. The interior grooves minimize spiraling and enhance young, white, and functional roots, improving the stability of tall plants and nutrient assimilation.
Recommended combination: compatible cultivation trays or collector plates (inside ≥ 34 x 34 cm), adjustable drippers of 2–4 L/h, SCROG nets to open the canopy, stakes, soft rings, and labels. In indoor cultivation facilities with automatic irrigation, the raised bottom favors clean runoff and drainage measurement to adjust EC and pH. Aerated substrates (peat/coco with perlite) help maintain a spongy structure between frequent waterings.
1) Preparation: Add 1–2 cm of expanded clay or coarse perlite to enhance drainage. Fill with aerated mix and moisten evenly.
2) Transplant: Place the root ball centered, gently compacting to eliminate air pockets. Keep the stem neck above the substrate line.
3) Watering and nutrition: Water until obtaining 10–20% runoff through the bottom holes. Adjust frequency according to plant size, temperature, and ventilation. Control pH/EC of input and output to avoid salt buildup.
4) Indoor organization: Arrange in a grid inside trays to move complete groups; rotate 90° periodically to homogenize PPFD under LED or HPS.
5) Maintenance: Between cycles, empty, wash, and disinfect with a mild solution. Check that perforations and raised base remain free of obstructions.
The price of Black Square Pot 25 Liters allows you to equip complete rooms with a tight investment. At Hydroponics Blanes there are packs with collector trays, substrates, and drip lines that optimize budget and time in indoor cultivation.
Available at Hydroponics Blanes, trusted Grow Shop, and online grow shop with discreet shipping. Technical advice to choose containers and indoor accessories adapted to cannabis cultivation goals and other indoor species.
For projects that require stability, watering margin, and vigorous roots, the Black Square Pot 25 Liters offers a solid base: resistant black plastic, raised bottom, anti-spiraling grooves, and efficient drainage.
In the Hydroponics Blanes ecosystem, within a technical catalog online grow shop, it is easy to complete the set with nets, stakes, meters, and trays to maintain order and efficiency in indoor cultivation facilities focused on cannabis plants.
A proposal designed to scale production with fine control of watering and nutrition, backed by a team with a vocation as a trusted Grow Shop and logistics of discreet shipping throughout Spain.