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KOOI
KOOI spherical aquarium air stones in 40 mm and 50 mm diameters with stainless steel barbed airline connectors.

Air Stones & Diffusers

Representative Product

KOOI Spherical Air Stones with Stainless Steel Connectors – 40 mm & 50 mm

Spherical air stones in 40 mm and 50 mm sizes, with porous stone bodies and stainless steel airline connectors for aquarium and aquaculture aeration.

MOQ
448 PCS
Available Models
QS-40-W, QS-40, QS-Q50-L-W, QS-Q50-L
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Overview

  • KOOI spherical air stones distribute air through a porous stone body to produce fine bubbles for aquarium and aquaculture aeration. Both sizes feature stainless steel barbed connectors. The 40 mm version connects to 4 mm airline tubing, while the 50 mm version accommodates 4 mm or 8 mm airline tubing with a stepped connector.
  • The 40 mm version has a total height of 50 mm, and the 50 mm version has a total height of 70 mm, including the connector. Applications include public aquariums, aquaculture facilities, fish tanks and ozone diffusion systems.
  • Made from silicon carbide and sintered at high temperatures, this air stone offers a long service life and can be scrubbed clean repeatedly.

Specifications

Physical

Common Specifications

Material
carborundum
Connection Size
4 mm

Model Comparison

SpecificationQS-40-WQS-40QS-Q50-L-WQS-Q50-L
Diameter (mm)40405050
Dimensions (mm)φ40*50φ50*70φ40*50φ50*70

General

Model Comparison

SpecificationQS-40-WQS-40QS-Q50-L-WQS-Q50-L
Net Weight (kg)0.06—0.12—
Gross Weight (Kg)—0.8—0.14
Packaging Unit (PCS)448120216120
Carton Dimensions (cm)33*33*3541*35*2533*33*3541*35*25

Applications

Home AquariumKoi & Ornamental PondsRecirculating Aquaculture

OEM & ODM Options

  • Housing Color Customization

    Confirmed OEM customization option.

  • Packaging Customization

    Confirmed OEM customization option.

  • New Appearance Development

    Confirmed OEM customization option.