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Round Green Tank 500 Liters is a rigid container of large capacity with lid included, designed for indoor cultivation that requires autonomy, cleanliness, and control. The opaque green finish blocks light and protects the water for a stable irrigation system, with easy assembly and convenient maintenance.
Logistics note: this item may incur a volume-based shipping surcharge.

This round tank provides a capacity of 500 L in a robust format of Ø102 x 89 cm, made of highly resistant rigid plastic. The lid reduces evaporation and prevents the entry of dust and insects, while the opacity of the green color minimizes algae and helps keep pH and EC stable.
The volume allows feeding several lines of drippers, rings, or micro-sprinklers, as well as NFT gutters in production spaces. Many models integrate a service tap for purges and transfers; when not present, it is easy to install a bulkhead fitting with a shut-off valve.
In large tanks, it is advisable to use a circulation pump or aeration with a diffuser stone to prevent static layers and sludge on the walls. The range of rigid tanks is also offered in 200 L and 300 L to scale the project.
In the Hydroponics Blanes online grow shop, trusted Grow Shop, this equipment is combined with a wide catalog of irrigation accessories and discreet shipping to the peninsula and various European destinations.
Logistics note: this item may carry a transport surcharge due to volume.
For indoor growing installations with high plant density, the Green Round Tank 500 Liters provides autonomy for several daily cycles, avoids continuous preparations, and reduces variability between batches. The diameter of 102 cm and the height of 89 cm offer stability and enough interior space for a submersible pump, air diffusers, level probe, and flow sight glass. The circular geometry favors a natural vortex during mixing, limiting salt deposits and improving nutrient homogeneity to water indoor crops consistently.
It functions as the main water tank, fertilizer mixer, and hydraulic buffer that stabilizes flow in simultaneous irrigation. It also serves as a service tank for washing, rinsing, or specific maintenance solutions. The lid increases protection against environmental contamination and the opacity of the material reduces photodegradation of the mixture. In NFT architecture and recirculation systems, the 500 L volume smooths out demand peaks and maintains a more stable thermal margin.
To get the most out of the tank, it is advisable to integrate:
All available at Hydroponics Blanes with specialized technical advice and discreet shipping from the online grow shop.
1) Place the tank level and accessible, preferably next to the cultivation table or bench.
2) Install bulkhead fittings for lower outlet or place a submersible pump centered; connect to the main collector.
3) Fill with water, measure pH and EC; add fertilizers following the order recommended by each manufacturer.
4) Keep the lid on to limit light, dust, and insects; add a circulation pump or aeration if the solution remains for more than 24–48 h.
5) Schedule irrigation according to substrate and phenological phase to water indoor crops uniformly.
6) Renew solution and periodically clean walls with diluted peroxide; rinse with clean water before mixing again.
Quick sheet for the store: capacity 500 L, dimensions Ø102 x 89 cm, green color, lid included and option of tap or outlet with bulkhead fitting. Range also available in 200 L and 300 L to suit different irrigation scales.
The price of the Green Round Tank 500 Liters may vary due to stock, campaigns, and packs with irrigation accessories (pumps, filters, valves, fittings). Certain destinations may apply a volume surcharge in transport. Check conditions and active offers at Hydroponics Blanes.
Available at Hydroponics Blanes, trusted Grow Shop specialized in indoor growing and irrigation systems. Secure platform, expert attention, and discreet shipping from the online grow shop to Spain, Portugal, Germany, France, and Italy. After purchase, you receive an email with a 5% discount code for the next order.
Green Round Tank 500 Liters offers great autonomy, effective opacity, and compatibility with instrumentation for domestic and semi-professional projects.
Integrated with pump, filter, and parameter control, it acts as the operational center of the irrigation system and facilitates watering indoor crops with consistency, cleanliness, and less daily dedication.
Available at Hydroponics Blanes with a wide catalog of irrigation accessories and technical support at all stages of assembly.