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18 Liter Black Square Pot designed for healthy and uniform growth in indoor cultivation. Made from 100% recycled plastic, it features a raised bottom for optimal drainage and interior grooves that prevent root circling. Compact dimensions 30 x 30 x 30 cm to make the most of every corner of the grow tent.

This pot is designed for those seeking consistent results in cannabis plants within indoor grow setups. The raised base increases the air chamber under the substrate, promoting rapid drainage of excess water and reducing the risk of rot.
The interior features anti-spiral grooves that guide root growth downward and sideways, creating a denser and more functional root ball.
The bottom drainage holes and reinforced corners improve stability on trays and grow meshes.
With an 18-liter capacity, it offers a perfect volume for full indoor cycles, growing medium-sized photoperiod strains or vigorous autoflowering plants.
Robust material made of 100% recycled plastic, lightweight and moisture-resistant, suitable for peat, coco, airy mixes with perlite, and even expanded clay at the base.
The square format optimizes space: more root surface per square meter compared to round pots, ideal for tents and rooms with indoor grow trays.
Compatible with manual watering or automatic drip systems; the raised bottom helps prevent waterlogging even with frequent watering.
A practical choice for intensive feeding plans, guided by pH and EC meters, where drainage management makes the difference.
30 x 30 x 30 cm dimensions that fit standard tents, allowing you to line up rows and maximize work aisles. The black color limits light entry to the substrate, keeping microbial activity controlled. The square design makes it easy to use indoor accessories like stakes, SCROG rings, and catch trays. Ideal for growth and flowering phases in cannabis cultivation, with oxygenated roots and fast drainage to maintain stable parameters.
It is used to complete a full cycle of cannabis plants indoors, maintaining a balance between substrate volume and irrigation control. The raised bottom creates an air chamber that promotes gas exchange, while the bottom holes drain excess water. The internal grooves prevent spiral roots, improving nutrient absorption and response to fertilization. It is also useful for intermediate transplants when a stable jump from 7–11 L to higher yields is needed.
Works great with collection trays to keep the room clean and measure drainage, rings or localized watering drippers, SCROG meshes to open branches and optimize light, and riser bases when using grow tables. Combined with airy substrates (coco + perlite 70/30) and stakes, the root structure develops with vigor and stability. For fine control, it is advisable to add pH/EC meters and a watering schedule according to the room's evapotranspiration.
1) Preparation: cover the base with 2–3 cm of expanded clay, add airy substrate and moisten slightly.
2) Transplant: place the root ball centered, fill without over-compacting to preserve porosity.
3) Watering: water until you get 10–20% drainage; avoid continuous waterlogging. The raised bottom helps drain quickly.
4) Maintenance: rotate the pot at each watering to even out light and growth. Check roots at the base to adjust watering frequency.
5) Flowering: maintain a stable watering pattern; if drainage exceeds 30%, reduce watering volume or increase substrate aeration.
Competitive price at Hydroponics Blanes, trusted Grow Shop with a specialized catalog. Check active offers in the online grow shop and save on packs with trays, stakes, and irrigation systems. With online purchase, you receive an email with a 5% discount code for your next order.
Available at Hydroponics Blanes through the online grow shop, with discreet shipping throughout Spain. More than 5,500 references in indoor accessories to complete indoor grow setups with everything you need: pots, trays, growing media, irrigation, and environmental control.
Key features: 30 x 30 x 30 cm | 18 liters | 100% recycled plastic | raised bottom for optimal drainage | anti-spiral interior grooves | bottom drainage holes | square format that optimizes space in tents.
A reliable option for small and medium-scale cannabis cultivation where uniform watering, active roots, and easy drainage management are sought. The 18 Liter Black Square Pot fits production plans focused on stability and yield, integrating effortlessly into daily watering and feeding routines with pH and EC control. Perfect for those who value order, cleanliness, and maximum use of space.
For those looking for a practical format, this pot offers a balance between volume and maneuverability, with a design that protects the root system and facilitates efficient nutrition from the vegetative phase to harvest.
At Hydroponics Blanes, every order is handled with discreet shipping and professional advice, consolidating a true trusted Grow Shop for any indoor growing project.