Description:
The outlet is where your canister filter returns clean, filtered water back into the tank, and the shape of that outlet determines how water moves through your aquascape. The Hemispherical Outlet features a wide, dome-shaped bell that disperses the return flow broadly across the water surface, creating a gentle, wide current that moves water throughout the tank without creating a strong directional jet.
This makes the hemispherical outlet particularly well suited to planted tanks, where strong, concentrated flow can damage delicate plant leaves and disturb fine substrate. The broad, diffused current keeps water moving evenly across the tank, supports CO2 distribution to plants, and maintains surface movement for gas exchange without the turbulence that a more directional outlet would create. It's the outlet style most commonly associated with the classic aquascape aesthetic.
Dimensions: 180mm height, 75mm width. Made from high-quality glass with high resistance to temperature changes.
Available in 12mm and 16mm to match your canister filter's tubing size. Select the required size above. Each size pairs with the corresponding standard inlet or surface skimmer inlet to complete your glass lily pipe setup.
Also available as a Speaker Outlet for aquascapers who prefer a more directional, concentrated return flow.
Each piece is sold separately. This product is the 12mm Hemispherical Outlet only.
Please check your filter's internal hose diameter before purchasing to ensure the correct fit.
Suitable with canister filters for freshwater planted aquariums and aquascaping setups.
Product Features:
- Made from durable, transparent glass that is resistant to breakage and ensures long-lasting use.
- Designed to provide optimal water flow and filtration, maintaining a clean and healthy aquarium.
- High resistance to temperature changes, making it suitable for various aquarium environments.
Product Specifications:
- Material: High-Quality Glass
- Outlet Sizes: 12mm
- Colour: Transparent
Dimensions:
- Hemispherical-Outlet 12mm: 180mm/7.08in height, 75mm/2.95in width
Items Included:
- 1 x Hemispherical Glass Pipe 12mm
Please Note:
Rinse all glass components with water before installation to remove any dust or debris.
Handle with care to avoid breakage.
Regularly clean the glass pipes to maintain optimal water flow and appearance.
Ensure proper installation to prevent the suction of small fish or shrimp.
Glass Lily Pipe - Hemispherical Outlet - 12mm
Glass Lily Pipe - Hemispherical Outlet - 12mm
Everything about shipping, specifications and warranties is just below.
Why Shop With Us — Our Guarantee & Shipping Info
Why Shop With Us — Our Guarantee & Shipping Info
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🚚 Standard Shipping Up to 10 kg ($11.95 to $24.95): Delivery within 3 to 10 business days. Rates by order weight: up to 1.5 kg $11.95; 1.5 - 2.5 kg $14.95; 2.5 - 4 kg $16.95; over 4 - 7 kg $19.95; 7 - 10 kg $24.95.
🚚 Heavy & Bulk Shipping Over 10 kg ($34.95 to $59.95): Delivery within 3 to 10 business days. Rates by order weight: 10 - 15 kg $34.95; 15 - 20 kg $44.95; over 20 kg $59.95.
Shipping is calculated at checkout based on the combined weight of dry goods in your order.
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Tips Before You Buy — Product Guidance
Tips Before You Buy — Product Guidance
💡 Unsure which product is right for your tank? Visit our Education section or Blogs for help choosing the best equipment.
🐟 Beginners can start with: How to set up your aquarium, while everyone can check out Aquarium Maintenance & Care for ongoing tank tips!
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How the Glass Lily Pipe Outlet Compares
⭕ Hemispherical Outlet
- 🌊Broad Water Distribution: The wide, dome-shaped bell disperses return flow broadly across the water surface, creating a gentle, diffused current.
- 🌿Well Suited to Planted Tanks: A more distributed flow pattern can be useful where strong, concentrated currents may disturb delicate plants or fine substrate.
- 🌀Gentle, Diffused Circulation: Helps move water throughout the aquarium without producing the same concentrated directional jet as a speaker-style outlet.
- 💨Supports Surface Movement: Broad return flow can help maintain surface movement for gas exchange while distributing water across the aquarium.
- ✨Classic Aquascape Design: Transparent glass and the traditional lily pipe shape provide a clean, minimalist appearance in planted aquariums.
🔊 Speaker Outlet
- 🎯More Focused Water Flow: Directs return water in a concentrated stream, creating stronger directional movement across the aquarium.
- ➡️Targeted Circulation: Useful when you want to direct flow toward a particular area, corner or filtration zone.
- 🌊Stronger Directional Current: The narrower outlet produces a more focused flow pattern rather than broadly dispersing the return water.
- 💨Useful for Higher-Flow Setups: A practical option where stronger, more targeted water movement is preferred.
- ✨Minimal Glass Design: Transparent glass keeps the outlet visually discreet while maintaining the clean aquascaping aesthetic.
The hemispherical outlet is the most popular outlet style among planted tank aquascapers for good reason. The wide, diffused flow suits the gentle water movement that most aquatic plants prefer, and the broad bell shape is visually striking in a well-set-up display tank. It's the outlet we'd recommend first for anyone setting up a planted aquascape.
Clean glass lily pipes regularly to prevent algae and calcium build-up, which reduces flow and detracts from the aesthetic. A dedicated lily pipe cleaning brush (a long, flexible brush sized to fit the pipe diameter) makes this straightforward. Soak in a diluted white vinegar solution to dissolve stubborn calcium deposits, then rinse thoroughly before returning to the tank. Handle with care during cleaning as glass pipes can crack if knocked against hard surfaces. Always disconnect from the filter before removing.
Frequently Asked Questions
What is a glass hemispherical outlet used for?
The hemispherical outlet returns filtered water from a canister filter to the aquarium while spreading the flow broadly across the water surface. This creates a gentler, more diffused current compared with a more directional speaker outlet.
What is the difference between a hemispherical outlet and a speaker outlet?
A hemispherical outlet spreads return flow broadly to create a gentle, diffused current, while a speaker outlet produces a more concentrated directional flow. Your choice depends on the type of water movement you want in your aquarium.
Which size should I choose?
Choose the 12mm or 16mm version to match the internal diameter of your canister filter hose. Check your filter's hose size before purchasing to ensure the correct fit.
Is the hemispherical outlet suitable for planted aquariums?
Yes. Its broad, diffused flow makes it particularly well suited to planted aquariums where you want water movement without creating a strong concentrated jet.
Can it help distribute CO2 throughout a planted tank?
Good water circulation can help distribute dissolved CO2 and nutrients throughout a planted aquarium. The actual effectiveness will depend on the overall flow and layout of your aquarium.
Can I use this with any canister filter?
It is designed for canister filters that use compatible 12mm or 16mm tubing. Always check your filter's internal hose diameter before purchasing.
Can I pair it with a glass lily pipe inlet?
Yes. The hemispherical outlet can be paired with the corresponding glass inlet or surface skimmer inlet in the same tubing size to create a matching glass lily pipe setup.
Is the glass resistant to temperature changes?
Yes. The outlet is made from high-quality glass designed to withstand temperature changes associated with normal aquarium use. Handle glass equipment carefully during installation and cleaning.
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