AST04 – XXL aeration stone
Resun AST04 XXL is a 20x101 mm cylinder air stone for 4/6 mm airline hose, rated for aquariums and ponds…
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Find a productProduct description
This cylinder air stone is intended for large reptile-free aquatic setups, namely aquariums and ponds of 500 to 4000 litres, where a standard diffuser would be too small to supply enough oxygen. It suits hobbyists who run high-output air pumps and want one diffuser that matches the full working range of those pumps.
Why it matters
- The 20x101 mm cylinder gives a large diffusion surface, which the manufacturer describes as the basis for effective gas transfer into the water.
- It is designed for pumps from 3 l/min up to 100 l/min, so it can be paired with a wide range of air pumps without changing the diffuser.
- It connects to a standard 4/6 mm airline (6 mm outer, 4 mm inner), which is the hose size fitted to every compatible air pump.
- According to the supplier, it is tested repeatedly, holds safety certificates, and does not alter the chemistry of the water or the gas, including pH.
Specifications
- Brand: Resun
- Model: AST04 XXL
- EAN: 6933163309489
- Dimensions: 20x101 mm
- Hose connection: 4/6 mm (outer 6 mm / inner 4 mm)
- Recommended tank or pond volume: 500–4000 l
- Compatible pump output: 3–100 l/min
- Weight: 0.1 kg
What it works with
The stone is intended for large freshwater or pond installations that run on an air pump with a 4/6 mm hose. Its volume and output range make it a fit for setups from 500 to 4000 litres, provided the pump output falls within the 3–100 l/min range.
Technical specification
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Frequently asked questions
It is designed for a standard air hose with a 6 mm outer diameter and a 4 mm inner diameter. The supplier states that every air pump includes a hose of these dimensions.
It is designed for any air pump with an output between 3 l/min and 100 l/min. Check your pump's output before ordering.
The supplier specifies it for aquariums and ponds from 500 to 4000 liters. It is not intended for smaller tanks.
According to the supplier, it is neutral for the chemical composition of the water and the gas and does not change the pH of the water. The supplier also states that the product is tested and has safety certificates.
It measures 20 x 101 mm and weighs 0.1 kg.
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