ADA Pollen Glass Large Series

ADA Pollen Glass Large Series

When your planted aquarium demands serious CO2 or air diffusion at scale, the ADA Pollen Glass Large Series delivers. Engineered for larger aquascapes and high-output systems, these premium borosilicate glass diffusers produce a dense curtain of ultra-fine bubbles that dissolve efficiently throughout the water column. Available in two disc diameters — 20Φ and 30Φ — and in both CO2 and air diffusion configurations, there’s a Pollen Glass Large for every high-demand setup.

Pollen Glass Large 20Φ (CO2)

The 20Φ CO2 version is ideal for medium-to-large planted aquariums running pressurized CO2 systems. Its ceramic disc produces a consistent mist of micro-bubbles that maximize CO2 dissolution, supporting vigorous plant growth and vibrant aquascapes.

• 20mm ceramic disc diameter for efficient CO2 micro-bubble output
• Optimized for pressurized CO2 systems in medium-to-large tanks
• Ultra-fine bubble production for maximum CO2 absorption
• Premium borosilicate glass — made in Japan
• Compatible with standard CO2 tubing and ADA regulators

Pollen Glass Large 30Φ (CO2)

The 30Φ CO2 model features a larger diffusion disc for high-output CO2 delivery across bigger aquariums. Ideal for aquascapers running demanding plant communities that require sustained, high-volume CO2 saturation throughout the tank.

• 30mm ceramic disc for high-volume CO2 diffusion
• Designed for large aquariums and high-demand planted setups
• Produces a dense, even curtain of ultra-fine CO2 micro-bubbles
• Premium borosilicate glass — made in Japan
• Compatible with standard CO2 tubing and ADA regulators

Pollen Glass Large 20Φ (Air)

The 20Φ air diffuser variant brings the same Pollen Glass quality to aeration applications. Perfect for aquariums requiring supplemental oxygenation — during CO2 off-periods, overnight aeration, or in fish-forward setups where surface agitation alone isn’t enough.

• 20mm ceramic disc for fine air bubble diffusion
• Ideal for supplemental aeration and overnight oxygenation
• Produces fine, even air bubbles for efficient gas exchange
• Premium borosilicate glass — made in Japan
• Compatible with standard airline tubing and air pumps

Pollen Glass Large 30Φ (Air)

The 30Φ air version is the highest-output option in the Pollen Glass Large series, delivering broad, fine-bubble aeration across large aquariums. An excellent choice for heavily stocked tanks or systems where robust oxygenation is a priority.

• 30mm ceramic disc for maximum-coverage air diffusion
• Best suited for large aquariums with high aeration demands
• Fine, consistent bubble output for thorough oxygenation
• Premium borosilicate glass — made in Japan
• Compatible with standard airline tubing and air pumps

All ADA Pollen Glass Large diffusers are crafted from premium borosilicate glass in Japan, reflecting ADA’s dedication to precision aquascaping tools that perform as beautifully as they look.