Chelate
Marine

Hinomaru Sangyo Co.,Ltd.

\ Just Toss It into Water /

Improve Water Quality for Better Aquatic Habitat
Improve Water Quality for
Better Aquatic Habitat

Chelate Marine helps purify water in aquaculture tanks and publicly managed ponds, rivers and bays. Our product prevents the cause of the nasty odor and sludge underwater and provides fish and shellfish with a better aquatic and sediment environment. It leads to enhancing their growth, improving their survival rate and cutting down on work and costs relating to tank management and cleaning. Thus far, shrimp farmers and clam farmers have selected Chelate Marine. 

◀︎ Chelate Marine / P-type

Where Chelate Marine Is Utilized

Aquaculture Farm
(clam, oyster, shrimp, etc.)

Purify water, reduce odor

Enhance growth

Improve survival rate

Increase algae

Bays, Rivers,
Ponds and Filter Tanks

Purify water

Reduce sludge

Reduce odor

Use Cases of Chelate Marine

Shrimp Farm

Chelate Marine helped increase the average weight of shrimp from 15.3 grams to 17.8 grams and grow its average body length from 12.7 cm to 13.5 cm. 

before use

after use

Garden Pond

After the two-month use, Chelate Marine lowered COD (Chemical Oxygen Demand), the value representing the water pollution level, from 20 ppm to 12 ppm. 

before use

after use

Clam Farm

Three-month use of Chelate Marine increased the survival rate of clams.

before use

after use

Fish Tank

After the three-month trial use, Chelate Marine lowered COD (Chemical Oxygen Demand), the value representing the water pollution level, from 20 ppm to 5 ppm. 

before use

after use

※ These values are based on actual measurements, not guaranteed ones. 

Pond
(Shobara, Hiroshima)

Lowered
COD

Riverbed
(Kyobashi River, Hiroshima)

Reduced
sludge

Gutter
(Fuchu, Hiroshima)

Reduced
odor

Waterfront
(Hatsukaichi, Hiroshima)

Reduced sludge,
increased shellfish

Waterfront
(Onomichi, Hiroshima)

Reduced sludge,
increased shellfish

Aquafarm
(Akitsu, Hiroshima)

Enhanced
oyster growth

River
(Yosano, Kyoto)

Reduce
sludge

Pond
(Jissoin Temple, Kyoto)

Lowered COD,
reduced algae

Beach
(Tara, Saga)

Increased
shellfish

Prawn Farm
(Kagoshima)

Lowered mortality,
reduced odor

※ COD (Chemical Oxygen Demand): The value which represents the water pollution level mainly from organic substances

River Policy Division, Hiroshima Prefectural Government

In FY 2012, the River Policy Division of Hiroshima Prefectural Government selected Chelate Marine as a new technology for improving river sediment and then conducted the monitoring study at Ota River (Kyobashi River) from FY 2013 to FY 2016. It was confirmed that Kireto Marine was effective in fixing hydrogen sulfide, increasing phytoplankton and benthic species, and reducing organic substances (sludge). 
〈 Hiroshima Prefecture website 〉

Easy to Install Chelate Marine!

Installing Chelate Marine in the Ariake Sea. Source: SPERA

Just Toss Chelate Marine into Water!

Installing Chelate Marine is very simple; Just toss it into water. Maintenance-free Chelate Marine can be quickly installed anywhere and help with cost reduction. Since Chelate Marine is made of natural ingredients, there is no need to salvage it after use. 

How Chelate Marine Works

①Leftover feeds and excretion increase nitrogen and phosphorus (N・P) which cause water pollution and a nasty odor caused by hydrogen sulfide (HS-) from sediment. 

②Fulvic acid iron and silicon eluted by Chelate Marine increase benthic diatoms, which decrease N・P and inhibit HS- emitted from sediment. 

③As fish and shellfish prey on benthic diatoms, their rapid growth can be expected. 

④Purified water, improved sediment and reduced odor create a better habitat for fish and shellfish.  

Contributing to SDGs for Richer Habitat!

Environmental Impact

Chelate Marine does not negatively impact the surrounding environment as it does not emit or elute noxious agents. Our product also meets all 27 items stipulated by the Ministry of the Environment’s Environmental Quality Standards for Water Pollution, and its safety is guaranteed since no heavy metal materials are not eluted.  

Carbon Dioxide Fixation

Chelate Marine is made from charcoal from domestically thinned bamboo. By installing Chelate Marine, carbon dioxide can be fixed for a long time as bamboo charcoal is non-perishable. 

Carbon Dioxide Fixation by Blue Carbon

Carbon dioxide and minerals (ferric ion (Fe2+) and silicon (Si)) eluted by Chelate Marine induce the growth of phytoplankton (benthic diatoms). It helps fix carbon dioxide, which otherwise causes the warming.

Media Coverage

●RCC: Umi To Nippon Project in Hiroshima
“Chelate Marine Regenerates Natural Environment”
Aired on October 22, 2018  Details >
●Hiroshima Television: Our work on SDGs was featured.
“Water-purification Technology for Shrimp Farm”
Aired on February 24, 2021  Details >

Secured Chelate Marine Meets Environmental Criteria

Chelate Marine meets all 27 items stipulated by the Ministry of the Environment’s Environmental Quality Standards for Water Pollution. Also, Chelate Marine’s safety is assured since no heavy metal materials are not eluted. The ministry verified and recognized Chelate Marine’s environment improvement technology at its Environmental Technology Verification (ETV) program in FY 2016. 〈ETV Program website〉

•Program name: Environmental Technology Verification (ETV)
•Area: Water purification technologies for lakes and reservoirs field
•Technology name: Environmental improvement technology by the Hinomaru style (Chelate Marine)
•Verification body: Mikuniya Corporation
•Verification site: Matsunaga Bay, Onomichi, Hiroshima
•Verification No.: 090-1601
※The Ministry of the Environment conducts the ETV project to promote advanced environmental technologies through the technical assessment and verification of its effect on environmental preservation objectively.

Various Types of Chelate Marine for Various Applications

L-type

Diameter: 175 mm,
Height: 115 mm
Validity Period: 3 years

B-type

Weight: 100g,
Size: 50×50×35 mm
Validity Period: A half-year – 1 year

P-type

Size: 10-20 mm
(pellet-shaped)
Validity Period: A half-year – 1 year

K1-type

Size: Smaller than
5 mm
Validity Period: A half year

Interested in Chelate Marine?
Free Samples Are Available.

If you are interested in Chelate Marine, please contact us via the link below. We will send you free samples so that you can actually evaluate how Chelate Marine works to improve the quality of water in tanks, ponds, rivers and bays. 

Chelate Marine
Inquiry Form

17-7 Kamishinonomecho Minami-ku,
Hiroshima-shi, Hiroshima-ken 734-0021 Japan

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