CT‑101 – adjustable aerator

The SunSun CT-101 is an aeration pump for aquarium keepers who need to keep oxygen levels stable and carbon dioxide from building up in the water. Fish and plants both consume oxygen and release CO2, and aeration replaces that CO2 with oxygen from the air, which also helps keep pH stable. The unit is sized for a single air line with one outlet.

Why it matters

• Stepless power regulation lets you set the airflow to match the oxygen and CO2 balance of the tank.
• The diaphragm is made from a flexible material that the manufacturer keeps proprietary, and the drive pin connecting the electromagnet to the diaphragm is titanium alloy, which the manufacturer describes as heat-resistant and lighter than conventional parts.
• The electromagnet coil has more windings within the same volume, which the manufacturer links to lower power consumption and higher output.
• Rubber feet and a rubber hanger reduce vibration transferred to the surface the pump stands on.

Specifications

• Power consumption: 3 W
• Pressure: 0.015 MPa
• Output: 1.5 l/min
• Number of outlets: 1
• Dimensions: 12.5 x 6.3 x 5.2 cm
• Weight: 0.32 kg

What it works with

The CT-101 is listed in the aquarium aeration category and is suited to freshwater and marine aquarium setups that need supplemental air. Its single outlet means it serves one air line, so it fits tanks where one diffuser or air-driven accessory is enough. Tank volume is not specified in the product data, so check the output of 1.5 l/min against your setup before purchase.