Supports fish health maintenance and water quality stability! Pre-order sales of "Secrets of Fish" using natural ore that utilizes natural ores, is now available for pre-order!
～A long-established quarry company is creating a stir among aquarium enthusiasts and the fishing industry nationwide.
Tsuruta Stone Co.
Tsuruta Stone Co., a long-established quarry stone company established over 95 years ago (headquarters: Nagoya, Aichi Prefecture), has developed an aquarium item, "Sakana no Himitsu," utilizing "magnetic peridotite," a natural ore mined at its plant in Toba, Mie Prefecture. Pre-order sales are being conducted on the crowdfunding site "CAMPFIRE" from July 6 (Sun.) to August 31 (Sun.), 2025.
CAMPFIRE" project page
https://camp-fire.jp/projects/866085/view
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What is "Secrets of Fish"?
This product is an item designed to condition ornamental fish and keep the water in their aquarium clean by utilizing the weak magnetic action and natural mineral elution of magnetic peridotite, a naturally occurring magnetic ore. Research conducted by the Nagoya Institute of Industrial Science (*1) suggests that it activates bacteria, increases fish weight, and stabilizes water quality.
(*1) Nagoya Institute of Industrial Science and Technology "Magnetic Protonics Research Group
https://www.nisri.jp/dor/groups/2011/2011_1.html
The right side uses magnetic peridotite
■About Returns
2,000 yen: 1 Sakana no Himitsu (for use in a small aquarium tank of about 5L)
4,000 yen: 3 pieces of "Secret of Fish" (for use in a 10L aquarium tank)
7,000 yen: 5 pieces of secret of fish (for use in a large aquarium or multiple aquariums)
All prices include consumption tax.
*Please see the project page for details.
Features of "Fish Secrets
Gently supports fish activity.
Weak magnetism gently regulates the condition of organisms.
Keeps the transparency in the aquarium.
Helps maintain water quality balance and tends to reduce the formation of algae and turbidity.
Safe and additive-free due to its natural origin.
No chemicals are used and only natural ingredients are used. No chemicals are used, and only natural materials are used.
Maintenance-free and can be used as-is.
The special mesh allows for installation in the aquarium without maintenance.
Project Outline
Project Name: "Sakana no Himitsu" (Secret of Fish)
A secret item that dramatically improves water quality
Period: July 6, 2025 (Sun) - August 31, 2025 (Sun)
URL ： https://camp-fire.jp/projects/866085/view
Outline of the product
Product Name ： Secrets of Fish
Release date: [Pre-order sales] July 6 (Sun.) - August 31 (Sun.), 2025
［General Sales] Undecided
Price ： [Expected general sales price] 2,000 yen (tax included)
Size ： Approx. 5 cm (width) X 5 cm (depth) X 5 cm (height) per bag
Contents ： 300g per bag
Usage ： Put directly into the aquarium tank.
Recommended use: 5-liter tank (1 pc)
For a 10-liter tank: 2 to 3 pieces
Recommended replacement every 3 months
Sales route: Pre-order through "CAMPFIRE", then general sales through Amazon, etc.
URL : https://camp-fire.jp/projects/866085/view
Future development of "Secrets of Fish
Furthermore, currently, in collaboration with the Toba City Fisheries Research Institute, we have begun demonstration tests for seaweed cultivation and application to the aquaculture industry. From the aquarium to the sea - the potential of this new water quality management solution utilizing natural materials is beginning to expand.
Natural and scientific aquarium care that anyone can easily start using simply by placing stones. This product, which is both environmentally friendly and practical, is now attracting a great deal of attention.
Company Profile
Company name: Tsuruta Stone Co.
Representative: Kinya Tsuruta, President and Representative Director
Location: 3-24 Morigo-cho, Atsuta-ku, Nagoya, Aichi 456-0024, Japan
Establishment : January 1928
Business activities: ・Production and sales of crushed stone and crushed sand
Development and sales of products utilizing magnetic peridotite
└ Water quality support item for aquariums "Sakana no Himitsu
└ Growth promotion item for houseplants "Gungun-dama
Capital ： 100,000,000 yen
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