Protein Skimmer, Venturi Type, 2 Units, Submersible Pump, Yaen Fishing, Fishing, Squid Fishing

I purchased this on Mercari but am selling it because I haven't had the chance to use it.

New, unused. Opened after purchase but never used.

Notes:
This is a used item.
Sold as-is.
Please refrain from purchasing if you are sensitive about condition or expect a brand-new item.
Please check the photos and purchase only if you are satisfied.
We cannot accept complaints or returns after purchase, so please understand this in advance.

The following is a quote from the original listing description:

[For Squid Fishing and Yaen Fishing]
Venturi Type Protein Skimmer for Live Bait - Set of 2

Regarding the use of this product:
Your cooler box will need intake and exhaust holes for this product to function.

(Product Features)
◎ Unlike air-lift types, this product does not require replacement of wood stones, making it more economical to use.

◎ Common types that drain water outside the cooler are not very hygienic. This product, however, has a system where dirty water collects in a cup, which is expected to be more hygienic.

◎ This skimmer set of 2 can keep approximately 25 horse mackerels alive (for a cooler of about 25L).

◎ Dissolved oxygen concentration is important for keeping horse mackerels, which are sensitive to oxygen deprivation, alive.
Especially as the temperature rises, the oxygen concentration in the water decreases.
While skimmer return bubbles can have a negative impact in coral reef aquariums, live fish like horse mackerels consume a lot of oxygen, so skimmer return bubbles are necessary.

◎ This skimmer system can generate a large amount of microbubbles, which are easily dissolved in seawater, and is designed to deliver high-concentration oxygen throughout the cooler box.

◎ This product is designed to generate a large amount of microbubbles, which are easily dissolved in seawater, allowing it to quickly increase the dissolved oxygen concentration in the seawater.

◎ The discharge system is also designed to efficiently deliver high-concentration oxygen throughout the cooler box by the force of the microbubbles being pushed out.

◎ It also includes the original skimming function of a protein skimmer (dirt removal function).

◎ By using this product, you can efficiently remove proteins and other substances released from the fish's mucus layer due to stress in a confined space, and maintain the seawater in the cooler box in a clean state at all times.

(Accessories)
Venturi type protein skimmer x 2
Submersible pump x 2
Instruction manual
Skimmer dimensions
W80 x D110 x H225 (mm)
Pipe diameter 50mm
Cup diameter 80mm