---
product_id: 24087258
title: "Nycon KK-01 Koi Kastle (Aluminum and Mesh) 18 x 12 x 5.5 Inches"
brand: "nycon"
price: "¥20128"
currency: JPY
in_stock: true
reviews_count: 8
category: "Nycon"
url: https://www.desertcart.jp/products/24087258-nycon-kk-01-koi-kastle-aluminum-and-mesh-18-x
store_origin: JP
region: Japan
---

# Provides essential shade on sunny days Spacious 18x12x5.5 inch size for fish comfort Aluminum frame for durable protection Nycon KK-01 Koi Kastle (Aluminum and Mesh) 18 x 12 x 5.5 Inches

**Brand:** nycon
**Price:** ¥20128
**Availability:** ✅ In Stock

## Summary

> 🐠 Keep your koi cool, safe, and stylish with the Koi Kastle!

## Quick Answers

- **What is this?** Nycon KK-01 Koi Kastle (Aluminum and Mesh) 18 x 12 x 5.5 Inches by nycon
- **How much does it cost?** ¥20128 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/24087258-nycon-kk-01-koi-kastle-aluminum-and-mesh-18-x)

## Best For

- nycon enthusiasts

## Why This Product

- Trusted nycon brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sun-Smart Shade:** Fiberglass mesh offers natural cooling and UV protection
- • **Perfect Pond Fit:** Compact 18x12x5.5 inches fits seamlessly on pond floors
- • **Stealthy Sanctuary:** Discreet mesh design lets you watch fish while they hide
- • **Predator-Proof Refuge:** Robust aluminum frame shields fish from herons and other threats
- • **Trusted by Enthusiasts:** Highly rated with 4.5 stars and proven predator defense

## Overview

The Nycon KK-01 Koi Kastle is a durable aluminum-framed, fiberglass mesh shelter measuring 18 x 12 x 5.5 inches, designed to provide pond fish with a secure hiding spot and shade from the sun. Its discreet design allows fish visibility while protecting them from predators, making it a must-have for any serious pond owner.

## Description

Pond fish hide inside the Koi Kastle for protection from predators. It also provides fish shade on sunny days. The Koi Kastle has an aluminum frame with a fiberglass mesh cover. It measures 18 inches long, 12 inches wide and 5.5 inches tall.

Review: Perfect Hiding Place - I purchased this Koi Castle because I thought my new Koi would need a hiding place in their new pond-home. I do like the castle and it is a perfect hiding place. My Koi however, haven't used it and I think it is due to the fact they really dont feel the need to hide. So I DO recommend this product, it is not super visible and does not take away from my pond, and you can see through it to view fish inside it. But my fish have not needed it!
Review: Really protects pond fish! - After a heron raid on my pond and losing many fish, I added the tunnel, Koi Kastle to the pond - another potential raid was thwarted as the fish were protected - didn't loose any fish - adding a second tunnel for insurance -

## Features

- Provides a place for fish to hide from predators
- Provides fish shade on sunny days
- Features an aluminum frame and fiberglass mesh
- Sits on the bottom of a pond
- 18 inches long, 12 inches wide and 5.5 inches tall

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000P6EH3K |
| Best Sellers Rank | #238,022 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2,943 in Pond Equipment |
| Customer Reviews | 4.5 4.5 out of 5 stars (82) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 13.6 ounces |
| Item model number | KK-01 |
| Manufacturer | NYCON |
| Product Dimensions | 18 x 12 x 5.5 inches |

## Product Details

- **Brand:** Nycon
- **Material:** Fiberglass, Aluminum
- **Special Feature:** Lightweight
- **Product Dimensions:** 18"L x 12"W x 5.5"H
- **Shape:** rectangular prism
- **Specific Uses For Product:** fish protection, shade provision
- **Style:** Modern
- **UPC:** 722543440104
- **Vivarium Type:** Fish Breeding Tank
- **Global Trade Identification Number:** 40722543440102

## Images

![Nycon KK-01 Koi Kastle (Aluminum and Mesh) 18 x 12 x 5.5 Inches - Image 1](https://m.media-amazon.com/images/I/71tJ3yt7QwL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Is this the 9 x 18? and it comes with that black plastic cover?**
A: No

**Q: Seems very light, will it stay at the bottom of the pond by itself?**
A: Yes

**Q: Can I place it Above ground instead of inside the pond?**
A: it would be okay above ground....

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect Hiding Place
*by D***Y on August 24, 2019*

I purchased this Koi Castle because I thought my new Koi would need a hiding place in their new pond-home. I do like the castle and it is a perfect hiding place. My Koi however, haven't used it and I think it is due to the fact they really dont feel the need to hide. So I DO recommend this product, it is not super visible and does not take away from my pond, and you can see through it to view fish inside it. But my fish have not needed it!

### ⭐⭐⭐⭐⭐ Really protects pond fish!
*by D***L on May 27, 2022*

After a heron raid on my pond and losing many fish, I added the tunnel, Koi Kastle to the pond - another potential raid was thwarted as the fish were protected - didn't loose any fish - adding a second tunnel for insurance -

### ⭐⭐⭐⭐ My goldfish like to hide under the Koi Kastle (Aluminum and Mesh) 18 x 12 x 5.5 Inches
*by W***N on August 18, 2020*

I bought this because I have an 8ft x 15ft pond with fairly transparent water and about a dozen 4 to 6 inch goldfish in it. Lately, I have found that herons from the bayou near my street in Houston are occasionally landing on the pond border and trying to get my fish. I put the Koi Kastle on the pond bottom at the deep end (2.5ft deep), and I find that many of the goldfish are hiding under it. It has algae growing on the mesh, which helps conceal the fish.

## Frequently Bought Together

- Nycon KK-01 Koi Kastle (Aluminum and Mesh) 18 x 12 x 5.5 Inches
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-23*