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Black square pot 7 Liters concentrates everything necessary for an orderly and efficient indoor cultivation: 20 x 20 x 27 cm format, raised bottom for optimal drainage, smooth walls easy to clean, and made of 100% recycled plastic that withstands intensive cycles in grow tents and rooms.

The 7 Liter Black Square Pot is designed to optimize every centimeter in trays and work tables. The square design fits without gaps, allows for more plants per square meter, and improves the uniformity of light and airflow between canopies. The black color blocks light in the substrate, protects roots, and helps maintain stable humidity.
The base incorporates a slightly raised bottom with well-distributed drainage holes, which speeds up water evacuation and reduces the risk of waterlogging.
Inside, the anti-spiraling grooves guide root growth, preventing tight circles and promoting white, fine, and active roots.
With 7 liters you get an ideal balance for medium-sized cannabis plants: enough volume for consistent flowering, controlled watering, and comfortable mobility to rotate positions or relocate on tables.
It works with soil or coco, manual or drip irrigation, and naturally integrates with indoor accessories such as saucers, watering rings, stakes, and nets.
This format is very popular in cannabis cultivation aimed at moderate densities, maintaining batch uniformity and simple nutrient management.
Made from 100% recycled plastic, it offers robustness and a surface that is easy to clean, minimizing salt buildup between cycles.
Important recommendation: preferably for indoor use; direct sun exposure outdoors raises wall temperature and can heat the root ball.
In 80, 100, or 120 cm tents, the 7 Liter Black Square Pot allows for straight rows, service aisles, and stable light distribution. The square fit reduces side shadows and improves light penetration compared to round containers. The combination of raised base and precise drainage keeps the substrate aerated, key for root metabolism and nutrient uptake. In indoor grow setups with trays, it facilitates leachate collection and EC control in drainage for professional irrigation management.
It is used for vigorous growth and flowering phases of compact or medium varieties, maintenance of controlled mother plants, and programs with cuttings in continuous rotation. The 7 L volume provides room for root development without losing manageability, ideal when seeking water stability with regular watering and measured nutrients. It is also useful for aromatics and ornamentals in controlled environments, with the added order and repeatability required by a technical setting.
It is complemented by growing trays, saucers, drippers, and watering rings that distribute the nutrient solution evenly. Adding stakes, nets, and guiding systems helps stabilize canopies and distribute branches. pH/EC meters, timers, extractors, and filters complete a robust environment. At Hydroponics Blanes, online grow shop, and trusted Grow Shop, there is a complete catalog of indoor accessories that fit this pot to design modular and scalable indoor grow setups.
Preparation: rinse, disinfect if necessary, and dry. The smooth finish makes cleaning between cycles easy.
Substrate: use an airy mix (soil with perlite or coco). Leave 1–2 cm free at the edge to prevent overflow.
Transplant: place the root ball centered, fill without over-compacting, and water until light drainage is obtained.
Watering: adjust by pot weight and substrate appearance. Prioritize watering cycles with full drainage to avoid salts.
Maintenance: remove residue from walls with osmosis water or cleaning solution. Check drainage outlet periodically.
Practical tip: group by genetics and age, label each unit, and rotate positions to balance light reception. This method increases consistency of results in cannabis plants and simplifies data collection for watering and fertilization.
The price of the 7 Liter Black Square Pot stands out for its competitiveness within the indoor accessories family. At Hydroponics Blanes there are usually volume packs and promotions, with immediate availability and discreet shipping throughout the peninsula.
Available at Hydroponics Blanes, trusted Grow Shop, and online grow shop specialized in indoor growing and cannabis cultivation. Fast purchase, expert advice, and logistics focused on privacy and speed to equip tents and rooms of any size.
Anyone who needs order, reliable drainage, and active roots will find a clear ally in the 7 Liter Black Square Pot: dimensions 20 x 20 x 27 cm, 100% recycled plastic, internal grooves that prevent spiraling, and a raised base that speeds up drainage evacuation.
A solid piece to boost performance in indoor grow setups, easily integrated into the Hydroponics Blanes ecosystem —online grow shop with discreet shipping— and designed to get the most out of healthy and productive cannabis plants.