Bag of floating wheat germ food on a white background, pellets for koi carp in cool water

Bags of Aquatic Science Wheat Germ floating food in several sizes, yellow packaging featuring a red koi carp

Three Aquatic Science calibration tablets, S, M and L, with the pellet sizes and minimum fish length

Resealable 0.5 kg pouch of Wheat Germ Floating food for koi in fresh water, medium pellets of 4 to 5 mm

Resealable 2 kg bag of Wheat Germ Floating food for koi in fresh water, 4 to 5 mm medium pellets

Resealable 2 kg bag of Wheat Germ Floating feed for large koi, large 6 to 7 mm pellets

Wheat Germ Floating freshwater food for koi

32,90 €

Weight	Price	Price per kg	vs 0,5 Kg
0,5 Kg	10,50 €	21,00 €	—
2 Kg	32,90 €	16,45 €	−22 %
5 kg	62,90 €	12,58 €	−40 %

These 100% floating pellets in 2 to 3, 4 to 5 or 6 to 7 mm sizes feed koi carp and goldfish when the water is between 5 and 15 °C, in spring as it warms up and in autumn as it cools down.

The formula contains 32% protein, in a resealable bag of 0.5 to 9.5 kg.

Ref. ASWGFS2·Fish food

Food format : S

Weight : 2 kg, sur commande

2 Kg, sur commande

5 Kg, sur commande

Customer support 7 days a week by email

Delivery within 2 to 15 business days

100 % secure payment

The summary

What you receive: a resealable bag of 0.5 to 9.5 kg, pellets of 2 to 3, 4 to 5 or 6 to 7 mm, 100% floating.
What the analysis says: 32% protein, 9% fat, 0.9% total phosphorus.
Its working range: from 5 to 15 °C, that of the two shoulder seasons in the pond.
Why floating: you can see who is feeding, and you remove what is left with a net.
How many feeds: 1 to 3 a week, with leftovers netted out after 5 minutes.
How it arrives: parcel of 0.5 to 9.5 kg, to a pick-up point or your door.

100% floating pellets in three sizes, for water at 5 to 15 °C

Wheat Germ Floating is a cool-water food for koi carp and goldfish, to be used when the water is between 5 and 15 °C, in spring and autumn. Its 100% floating pellets come in 2 to 3, 4 to 5 or 6 to 7 mm. With 32% protein, it demands less digestive effort than richer foods.

There is a temperature window where a growth food is no longer appropriate and where stopping feeding altogether is premature. It opens twice a year, in spring when the water warms up and your koi start begging again, then in autumn when it cools down and they are still begging. These pellets cover that window, bounded by 5 to 15 °C, in three sizes, small at 2 to 3 mm, medium at 4 to 5 mm or large at 6 to 7 mm, and in a resealable bag from 0.5 to 9.5 kg.

🍂 Digestion in fresh water

The koi carp is a cold-blooded animal, so the pace of its digestion follows the temperature of the water around it. When the water cools, transit time lengthens and the activity of the digestive enzymes weakens. Between summer and winter, the transit time is 2 to 4 times longer. A rich feed given at that point stays longer in a slowed-down digestive tract, and a larger share of what it contains is not assimilated. What is not assimilated comes out into your water and adds to the nitrogen load that your filtration then has to deal with, as described in the article on the nitrogen cycle. At 32% protein, this pellet demands less digestive work than the maintenance feed at 33.5% or the colour feed at 39.5%.

In spring

The water is back above 5 °C. Give a single, much reduced meal, then run a water test before giving a second.

In autumn

Your koi still beg below 15 °C. Allow 1 to 3 feeds a week, and remove anything still floating after 5 minutes.

Below 5 °C

Feeding stops. Your fish live off their reserves until the spring warm-up.

🧪 The filter at restart

A biological filter restarts more slowly than the fish's appetite. At the end of winter, the nitrifying bacteria are still few in number, and the load you feed shows up in the water several days before it shows on the fish. Two measurements let you decide: an ammonium test for what your fish excrete, and a nitrite test for the intermediate stage, the one that lingers longest in a filter that is restarting. If either value rises, reduce the ration before doing anything else. A bacteria supplement speeds up this recovery.

Reading the water and weighing out the first ration

This 5 to 15 °C window is read in the water, not the air, as the gap between the two can reach several degrees in spring. Get a floating thermometer at the same time as the bag, and a precision scale or a graduated cup to measure out the first reduced ration. Above 15 °C, the next step up is in the pond fish food collection.

The pellet that stays on the surface

These pellets float completely, and that is your lever for controlling the ration: you can see which fish are feeding and which are keeping away, and you net out whatever has not been taken after 5 minutes. Never leave uneaten feed in the pond in cool, fresh water, because it breaks down slowly and loads a filtration system that is already running sluggishly. And never give this feed to ruminants or to any other animal species, as the label reminds you, because it contains fish meal.

🌡️ The two seasonal changeovers

The two windows are not managed in the same way. In autumn, your fish arrive with reserves built up over the summer and a filter still fully active, so the ration is reduced gradually, without urgency, and feeding stops of its own accord. In spring, the situation is the reverse, since the fish are lean and eager to feed while the filter has not yet picked up. A feeding error therefore weighs more heavily in spring, when the build-up must always stay slower than what your fish demand.

🐟 Small, medium or large

The small size, with pellets of 2 to 3 mm, suits fish from 7 cm, goldfish and young kois, and it is prepared to order in 2 or 5 kg bags. The medium, at 4 to 5 mm, is for fish of at least 15 cm, according to the guide printed on the packaging, and the large, at 6 to 7 mm, for kois over 25 cm. Choose the size according to the smallest fish in the pond, since they are the ones that hang back when the pellet is too big.

🌾 The formula and the phosphorus

The formula combines cereal and oilseed products, including the wheat germ that gives the feed its name, with fish meal and fish oil, algae and minerals. Its guaranteed analysis is 32% protein, 9% fat and 0.9% total phosphorus, against 1.3% for the colour feed. This lower content matters in spring, when the water warms up before the pond plants resume growth, because excess phosphorus then favours algae. In aquaponics, the same period is when your crops take up little, so a moderate ration avoids building up nitrates that no plant is yet consuming. Vitamins A, D3, E and C are added at guaranteed minimum levels.

📦 Which bag to choose

A 5 kg bag lasts a long time when the feed is given 1 to 3 times a week. If your pond holds 10 kg of fish, each meal weighs 100 g at the ceiling of 1% of their body weight, and two meals a week use about 860 g a month. The bag therefore covers almost 6 months of the shoulder seasons, generally autumn and the following spring. For a small pond, the 0.5 kg pouch or the 2 kg bag is used up within the season, which avoids keeping a part-used bag from one year to the next. The 9.5 kg bag, prepared to order in medium or large, is intended for large ponds: with 30 kg of fish and the same schedule, it covers about 3.5 months of the shoulder seasons. Closing the bag properly therefore matters more here than with summer feed: reseal it carefully, keep it dry and frost-free, and scoop it out with a dry cup rather than by hand, because moisture turns the fish oil in the formula rancid and encourages mould.

Technical specifications

Guaranteed analysis

Crude protein: 32%Less digestive effort at the time of year when transit is at its slowest.
Crude fat content: 9%
Crude fibre: 4.4%
Mineral matter: 8.4%Ash: the indigestible mineral part of the feed.
Calcium: 1%
Total phosphorus: 0.9%Compared with 1.3% for the colour feed and 1.6% for the sinking sturgeon feed.

Use and packaging

Temperature range: 5 to 15 °CMeasured in the water, in the morning, over several days in a row.
How the pellet behaves: 100% floatingWhatever is left after 5 minutes can be removed with a net.
Particle size: 2 to 3, 4 to 5 or 6 to 7 mmSmall from 7 cm, medium from 15 cm, large from 25 cm.
Target species: Koi carp, goldfish
Fresh water rate: 1 to 3 meals a weekBelow 5 °C, distribution stops until spring.
Packaging: Resealable bag of 0.5 to 9.5 kgThe small, the 5 kg large and the 9.5 kg bags are prepared to order.

Additives and composition

Vitamin A (E672): min. 8,000 IU per kg
Vitamin D3 (E671): min. 1,400 IU per kg
Vitamin E (3a700): min. 160 mg per kg
Vitamin C (3a312): min. 150 mg per kg
Declared ingredients: Cereals, oilseeds, fish, algaeCereals and oilseed products and by-products, fish meal, fish oil, algae, minerals.
Storage: Bag resealed, kept dry, frost-freeDamp turns fish oil rancid and encourages mould.

To budget for separately

Pond thermometer: 1 floating thermometer
Meal dosage: 1 set of scales or a graduated cup

12 further specifications are available in the detailed view.

In the box

1 resealable bag of 0.5, 2, 5 or 9.5 kg of floating pellets, small, medium or large depending on the variant chosen
1 manufacturer's label: composition, guaranteed analysis, batch number and best-before date

Guaranteed analysis, additives, ingredients list, 5 to 15 °C range and buoyancy taken from the manufacturer's Aquatic Science product descriptions on 05/09/2026; pellet sizes and bags from 0.5 to 9.5 kg recorded on 11/10/2026. Feeding schedules are orders of magnitude, to be adjusted to the appetite you observe.

Manufacturer and product safety

Manufacturer: AQUATIC SCIENCE SA
Postal address: Rue des Biolleux 8, 4800 Verviers, Belgique
Contact: info@aquatic-science.com
Website: aquatic-science.com

Information provided under Regulation (EU) 2023/988 on general product safety.

Which feed to use when the water is neither warm nor cold

The three floating foods in the range, arranged along the axis that decides mid-season: water temperature, and what the ration sends back into the filter.

A cool-season food: is it the right one for you? This formula digests well while the water is still cold, when other feeds begin to weigh on a slowed digestive system.

	Lowest operating temperature (°C)	The moment you open the bag	Time of year	Crude protein (%)	Total phosphorus (%)	Ammoniacal nitrogen per 100 g dispensed, as NH4 (g)	Floating proportion	Size sold	Bag sold
Recommended Fresh water, from 0.5 to 9.5 kgYour choice	5 °C	From the thaw, 5 °C	Spring getting under way and autumn drawing to a close	32 %	0.9 %	3.3 g	100 %	2 to 3, 4 to 5 or 6 to 7 mm	0.5 to 9.5 kg, some to order
All Seasons pond fish food, floating pelletsYour choice	12 °C	At restart, 12 °C	A long warm season	33.5 %	0.99 %	3.4 g	90 %	2 to 3, 4 to 5 or 6 to 7 mm	0.5 to 10 kg
Excellent Color astaxanthin food for koiYour choice	16 °C	In full heat, 16 °C	Midsummer	39.5 %	1.3 %	4.1 g	90 %	2 to 3, 4 to 5 or 6 to 7 mm	0.5 to 9.5 kg

Fresh water, from 0.5 to 9.5 kgRecommended

Its temperature window

Lowest operating temperature (°C)5 °C

The moment you open the bagFrom the thaw, 5 °C

Time of yearSpring getting under way and autumn drawing to a close

What the ration returns to the water

Crude protein (%)32 %

Total phosphorus (%)0.9 %

Ammoniacal nitrogen per 100 g dispensed, as NH4 (g)3.3 g

The granule

Floating proportion100 %

Size sold2 to 3, 4 to 5 or 6 to 7 mm

Bag sold0.5 to 9.5 kg, some to order

All Seasons pond fish food, floating pellets

Its temperature window

Lowest operating temperature (°C)12 °C

The moment you open the bagAt restart, 12 °C

Time of yearA long warm season

What the ration returns to the water

Crude protein (%)33.5 %

Total phosphorus (%)0.99 %

Ammoniacal nitrogen per 100 g dispensed, as NH4 (g)3.4 g

The granule

Floating proportion90 %

Size sold2 to 3, 4 to 5 or 6 to 7 mm

Bag sold0.5 to 10 kg

Excellent Color astaxanthin food for koi

Its temperature window

Lowest operating temperature (°C)16 °C

The moment you open the bagIn full heat, 16 °C

Time of yearMidsummer

What the ration returns to the water

Crude protein (%)39.5 %

Total phosphorus (%)1.3 %

Ammoniacal nitrogen per 100 g dispensed, as NH4 (g)4.1 g

The granule

Floating proportion90 %

Size sold2 to 3, 4 to 5 or 6 to 7 mm

Bag sold0.5 to 9.5 kg

Guaranteed analyses, operating temperatures and buoyancy taken from the Aquatic Science manufacturer's descriptions on 05/09/2026. The ammoniacal nitrogen values, expressed as NH4, are an upper-bound order of magnitude per 100 g fed per day. Pellet sizes and bags checked on 11/10/2026.

Estimate your
delivery time

Bag of 0.5 to 9.5 kg, shipped to a pickup point or to your home, as you choose during payment. The small size, the 5 kg bag in large and the 9.5 kg bags are prepared to order, which lengthens the dispatch time. The exact amount is calculated at checkout according to the total weight of your order.

Frequently asked questions

8 questions

6 key questions, 8 in the detailed view

How many meals a week should you give when the water is between 5 and 15 °C?

How do I resume feeding at the end of winter?

Measure the temperature in the water, in the morning, over several days in a row. One mild day does not make a recovery.
Wait until the water holds above 5 °C without dropping back below, and begin with a single, very small meal.
Run an ammonium test 2 to 3 days after this first meal, before giving a second one.
Then increase the frequency rather than the quantity, removing each time whatever is still floating after 5 minutes.

How can I tell if I'm giving too much?

Does this feed really contain wheat germ?

Yes, wheat germ is among the cereal products declared at the top of the composition, and it gives the formula its name. The label groups the ingredients by category, as the regulations allow for ornamental fish feed: cereal and oilseed products and by-products, fish meal and fish oil, algae, minerals.

Three points characterise this product: the usage range of 5 to 15 °C, 32% protein and 100% floating pellets.

Should you stop when the fish no longer beg for food?

Yes, and without trying to get them going again. The loss of appetite is gradual, then feeding stops completely well before the critical temperature is reached. This stop is a normal regulation.

In practice: offer a reduced handful, wait 5 minutes, and if it is still floating, remove it and do not insist for several days. The 100% floating nature of the pellet makes this test free, since nothing that has not been eaten escapes you.

Can this food be mixed with another from the same range?

Nothing prevents it, and it is in fact what is done during the 2 or 3 weeks of changeover, when the water crosses the 15 °C mark in one direction or the other from day to day. Reduce the share of the richer feed as the water cools, rather than switching bags overnight.

There is one limit, though: a mixture makes the ration impossible to read. If you no longer know what you have given, you can no longer draw any conclusions from what your water tests show. During a spring restart, it is better to have a single feed and a single variable.

Can this food be given in summer?

At what time of day should you feed when the water is cool?

How much should I give, and how long does the 5 kg bag last?

Enter the biomass of your fish, that is, the sum of their weights. The calculation uses 1% of this biomass per meal, the ration ceiling commonly published for koi carp at the upper end of the 12 to 15 °C range. The colder the water, the further the ration drops below this ceiling and the more widely meals are spaced.

Total biomass of your fish

1 kg60 kg

0g per meal

Ration for one meal, ceiling set for water at 12 to 15 °C. Give only what is eaten in under 5 minutes.

Monthly consumption at two meals a week

0 g per month

The 1% ceiling comes from the guideline figures commonly published for koi carp and stays below the maximum of 1.5 to 2% of biomass adopted by the FAO for common carp in ponds. The monthly consumption assumes two feeds a week, a mid-season rhythm: it makes no sense in summer. The rule that overrides any calculation remains the 5-minute rule.

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Wheat Germ Floating freshwater food for koi

The summary