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40 x 210 mm Tower Diffuser. oxygenates nutrient tanks in indoor cultivation through a constant column of microbubbles. Compact "tower" body, inlet for silicone tube and compatibility with air pumps guarantee a stable irrigation system for watering indoor crops with precision.

The Tower Diffuser 40 x 210 mm. is a porous stone designed for irrigation tanks and hydroponic systems. Connected to a pump via silicone hose, it releases fine bubbling along the entire piece, increasing dissolved oxygen (DO) and promoting root respiration.
The “tower” geometry offers a large active surface with a reduced footprint, useful in deep tanks or narrow vats where flat models take up too much space.
The 40 x 210 mm dimensions balance flow and bubble size, achieving homogeneous mixing and light agitation that helps stabilize pH and EC, reduce biofilm, and prevent sediment at the bottom. Reinforcements at the ends provide robustness in the tube connection area, minimizing breakage from repeated handling.
This diffuser works excellently in tanks dedicated to drip, NFT, recirculation, and auxiliary DWC, and integrates with control instrumentation to keep solutions cleaner and more consistent.
In the Hydroponics Blanes catalog, trusted Grow Shop and online grow shop, it is offered alongside a wide ecosystem of irrigation accessories with discreet shipping throughout Spain and selected European destinations.
Proper aeration makes a notable difference in root vigor, ion uptake, and solution stability. Tower Diffuser 40 x 210 mm. generates a vertical column of microbubbles that promotes gentle convective flow inside the tank, eliminating dead zones and homogenizing temperature. This dynamic reduces the risk of algae on illuminated surfaces, improves nutrient availability, and offers more regular irrigation throughout the photoperiod. In rooms with pulse irrigation, constant oxygenation keeps the mix ready between cycles and reduces batch-to-batch variations.
It is used to enrich the nutrient solution with oxygen, prevent salt stratification, limit stagnant odors, and improve internal tank cleanliness. It is useful in service tanks for rinsing, in fertilizer preparation vats, and in NFT or DWC tanks where the root zone demands continuous supply. By increasing dissolved oxygen, roots work with greater respiratory efficiency and the crop responds with faster and more uniform growth, key to watering indoor crops with consistent results.
To maximize the potential of the Tower Diffuser 40 x 210 mm. the following are recommended:
The entire set of irrigation accessories is available at Hydroponics Blanes, with specialized technical advice and discreet shipping from the online grow shop.
1) Rinse the diffuser stone before first use to remove manufacturing dust.
2) Connect the inlet to the silicone tube and this to the air pump; add check valve.
3) Place at the bottom of the tank, preferably centered or under the intake of the submersible pump to enhance circulation.
4) Adjust flow until uniform microbubbles are observed along the 40 x 210 mm.
5) Maintain continuous aeration when the solution remains in the tank for more than 24–48 h.
6) Perform periodic maintenance: submerge the piece in diluted peroxide or vinegar, rinse with water, and reinstall.
Key specifications: tower format, 40 x 210 mm dimensions, connection for silicone tube, and reinforcement at the ends for greater durability in intensive use.
The price of the Tower Diffuser 40 x 210 mm. may vary depending on promotions and packs with hose, check valve, or air distributors. Bundled options with air pump optimize investment in medium and large installations.
Available at Hydroponics Blanes, trusted Grow Shop specialized in indoor growing and irrigation system. Secure platform, expert support, and discreet shipping in the online grow shop. Each order includes an email with a discount code for the next cart.
Tower Diffuser 40 x 210 mm. transforms the tank into an oxygenated and stable environment: higher DO, homogeneous mix, and controlled parameters. Integrated with adjustable pump, meters, and opaque lid, it becomes an essential part of the irrigation system for watering indoor crops with consistency and cleanliness.
At Hydroponics Blanes it is easy to complete the setup with compatible irrigation accessories and technical support at all stages of the project.