Blue Diamond Pumps ET 80 Linear Diaphragm Air Pump — Weatherproof, 2.83 CFM Oil-Free Aeration

The Blue Diamond ET 80 is a weatherproof linear diaphragm air pump that injects clean, oil-free oxygen into ponds, water gardens or septic systems for improved water clarity year-round.

Whether you maintain koi ponds, backyard water features or residential septic aeration, the ET 80 delivers steady airflow with low noise and robust construction. Built to withstand outdoor conditions and backed by a two-year warranty, this pump is designed for continuous operation in summer aeration and winter deicing roles. It offers straightforward installation, field-serviceable diaphragm kits, and compatibility with standard fittings to keep your system oxygenated and clearer with less maintenance.

How much air does the ET 80 supply and what are the power needs?

The ET 80 provides a reliable airflow suitable for small to medium ponds and residential septic tanks. It balances a high enough output to oxygenate water with modest energy consumption for continuous use.

• Maximum airflow: 2.83 cubic feet per minute (approximately 75 liters per minute)
• Maximum pressure: 0.10 bar
• Power draw: 75 watts for continuous operation
• Connector size: 0.71 inch outer diameter; includes 1/2" ID bronze fitting

Will this pump run outdoors year-round and resist harsh weather?

The ET 80 is built with a weatherproof aluminum chassis and components formulated for long-term outdoor exposure. It’s suitable for both summer aeration and winter deicing tasks without frequent sheltering.

• All-aluminum housing resists corrosion and sun exposure
• Linear diaphragm designed for durability in variable temperatures
• Approved by international safety bodies for reliable performance
• Two-year manufacturer warranty for added confidence

How easy is installation and maintenance?

Setup is straightforward and field service is practical: the pump ships with the necessary bronze fitting and uses replaceable diaphragm kits so you can keep it running longer without full replacement.

• Included 1/2" ID bronze fitting simplifies plumbing connections
• Quick-access parts and replaceable diaphragm kits for routine service
• Low-noise operation suitable for residential settings
• Compatible with original equipment manufacturers of certified systems

What kind of systems and water volumes is the ET 80 best for?

The ET 80 fits small- to medium-scale uses where steady aeration is needed. It’s a common choice for backyard koi ponds, decorative water features and residential septic aeration up to typical household capacities.

• Rated air flow appropriate for ponds and water gardens up to several hundred gallons
• Suitable for residential septic tanks around 500 gallons per day (GPD) capacity
• Works well in multi-season applications: summer aeration and winter deicing
• Often used by manufacturers in certified residential sewage treatment equipment

Who is this for: The Blue Diamond ET 80 is aimed at pond owners, landscapers, and homeowners who need a dependable, low-noise aeration solution that runs year-round. If you manage koi or decorative water features, or require aeration for small residential septic systems, this pump offers a balance of airflow, durability and serviceability with recognized safety approvals.