The four Aquatic Science bags in the pack: Sinking, Wheat Germ Floating, Excellent Color and All Seasons

5 kg bag of Wheat Germ Floating, the floating wheat germ feed in the pack, on a white background

All Seasons maintenance food bag, image of the 5 kg size; the bag supplied in the pack is the 2 kg one

2 kg bag of Excellent Color, the pack's high-summer feed, on a white background

Sinking food bag for sturgeon, image of the 5 kg size, the bag supplied in the pack is the 2 kg one

Pond fish food, pack of 4 formulas

Name: Pond fish food, pack of 4 formulas
Brand: Aquatic Science
Price: 157.0 USD
Availability: InStock

$157.00

~~$182.00~~ $157.00

$52.33 × 3 with no fees Klarna.

The pack contains four sealed bags, 11 kg in total, one for each water temperature range: cold-water food in 5 kg, maintenance food in 2 kg, colour food in 2 kg and sinking food for bottom-dwelling fish in 2 kg.

The pack saves you from having to order the right food at the very moment the water changes. Open the bag your thermometer points to, and leave the other three sealed.

Pond fish food

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The summary

What you receive: four sealed bags, 11 kg in total, four different formulas.
What is in them: from 32% protein in the cool-water feed to 47% in the sinking feed.
Which bag to open: the water temperature decides, from 5 °C for the first to over 16 °C for the last.
For which ponds: water that drops below 12 °C for several weeks a year, and a bottom-dwelling fish.
What else you will need: a pond thermometer, and scales to calibrate the first meal.
How it arrives: one 11 kg parcel, to France, Belgium, Luxembourg and Germany.

Four bags, four water temperature ranges, 11 kg in total

The Aquatic Science pond fish food pack contains four sealed bags, 11 kg in total, one for each water temperature range: cool water from 5 °C, maintenance, colour above 16 °C and sinking food for bottom-feeding fish. The formulas range from 32% to 47% protein, and the thermometer shows which bag to open.

The pack brings together, in a single 11 kg parcel, four pond foods also sold individually: a 5 kg bag of cool-water food, a 2 kg bag of maintenance food, a 2 kg bag of colour food and a 2 kg bag of sinking food for bottom-feeding fish.

📆 The bag the water points to

The three floating foods are spread across the water temperature scale, with overlapping ranges so that the switch from one to the next happens smoothly: the cold-water food up to 15 °C, the maintenance food from 12 °C and the colour food above 16 °C. The fourth bag follows a different logic, since the sinking food is chosen according to the level of the tank at which the fish feeds, and not according to the temperature of your water.

From 5 to 15 °C

The fresh-water food, at 32% protein, takes up the biggest bag in the parcel, 5 kg, because this window comes round twice a year.

From 12 to 25 °C

The maintenance food, at 33.5% protein, is the one used on the greatest number of days in a pond year.

Above 16 °C

The colour food, with 39.5 % protein, is the only one in the parcel to declare a pigment, astaxanthin at 15 mg per kg.

On the bottom, all season long

The sinking feed, with 47% protein, feeds sturgeon, barbel, tench and ide.

🍂 The moment the water tips over

In spring as in autumn, the water temperature crosses the 12 and 16 °C thresholds that separate the formulas within a few weeks, and it can cross them again in the other direction after a few cold nights. With the four bags to hand, you open the one the thermometer points to that very morning, rather than stretching out last season's feed while waiting for an order. During these transition weeks, gradually blending the two neighbouring formulas avoids an abrupt change of ration, provided you reduce the share of the richer one as the water cools.

The 12 and 16 °C thresholds are read in the water

The two temperatures that tell you when to change bag are measured in the water, not in the air, which can read 20 °C above water at 11 °C. A floating thermometer read every morning, when the water is at its coldest of the day, gives you this value without any calculation. A precision scale or a graduated cup is then used to weigh out the first meal from each new bag.

Three calendar mix-ups

Do not keep using the colour feed once the water drops back below 16 °C, as its high protein content then weighs on a digestion that is slowing down. Do not give the sinking feed to koi just to finish the bag, because they take food at mid-depth and the sturgeon will go hungry. And never give these feeds to ruminants or any other animal species, as the label reminds you, because they contain fishmeal.

🧪 What a bag change involves

Between the lowest-protein bag in the parcel, at 32%, and the highest-protein one, at 47%, the difference in ammoniacal nitrogen produced at an equal ration is around 45%. Your biological filter takes a few days to adjust to a new load. Between 2 and 3 days after each change of bag, run an ammonium test and a nitrite test; if either value rises, reduce the ration before making any other correction. The way you feed, on the other hand, does not change from one bag to the next: several small feeds are better than one large one, and you give only what is eaten within 5 minutes. The full mechanism is described in the article on the nitrogen cycle.

📦 Three bags stay sealed

What ages in a pellet is the lipids, and this pack ranges from 8.5% fat on the colour feed to 13% on the sinking feed. The pack has an advantage here that a stock of four opened bags does not: while one formula is being used up, the other three stay sealed and do not oxidise. So open one bag at a time, the one the water temperature points to, start with the fattiest if you have a sturgeon, and do not keep a bag that has been opened from one year to the next. Single-bag formats are in the pond fish food collection.

⚖️ A season in figures

Take a pond stocked with 10 kg of fish. In full summer heat, at 2% of body weight per day, the colour feed is given at 200 g per day, so its 2 kg bag lasts about 10 days. The maintenance feed, at around 1.5% per day, or 150 g, lasts nearly 2 weeks with its own bag. The cold-water bag is used up much more slowly, since at 100 g per meal and 2 meals a week it lasts about 25 weeks of mid-season, that is, one autumn and the following spring. For a pond with 3 kg of fish, the same calculations give about 1 month for the colour bag and 6 weeks for the maintenance bag. In both cases, the summer bags run out first, and you can buy them again on their own, one at a time, while the others stay sealed.

🌿 The pack in aquaponics

In aquaponics, every change of bag also changes your plants' ration, since the nitrogen they receive follows the protein level fed. Moving from the freshwater food, at 32%, to the colour food, at 39.5%, therefore increases the nitrogen supplied by roughly a quarter for the same quantity. In spring, this increase arrives just as the crops restart and can absorb it, whereas in autumn the drop in protein goes along with the plants slowing down. To accommodate a sturgeon, the aquaponic set-up calls for a large pond coupled to grow beds, and the guide to keeping sturgeon in a garden pond details the conditions for this set-up.

Technical specifications

The four bags and what each is for

Cold-water feed: 5 kg, 32% proteinOpen between 5 and 15 °C. 9% fat, 4.4% fibre, 8.4% ash, 0.9% total phosphorus.
Maintenance feed: 2 kg, 33.5% proteinOpen between 12 and 25 °C. 8.9% fat, 4.1% fibre, 8.6% ash, 0.99% total phosphorus.
Colour-enhancing food: 2 kg, 39.5% proteinOpen above 16 °C. 8.5% fat, 3.2% fibre, 9.6% ash, 1.3% phosphorus, astaxanthin 15 mg per kg.
Sinking food: 2 kg, 47% proteinTo be fed at the bottom, for sturgeon and bottom-feeding fish. 13% fat, 2.1% cellulose, 10.9% ash, 1.6% total phosphorus.
Total parcel weight: 11 kg in 4 sealed bagsShipping weight 11.2 kg, packaging included.
Length of a feed: 5 minutes at mostThis is the rule that overrides all the others, whichever bag is open.

To budget for separately

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

In the box

1 sealed 5 kg bag of floating fresh-water food, with Wheat Germ Floating on the label
1 sealed 2 kg bag of floating maintenance food, All Seasons shown on the label
1 sealed 2 kg bag of floating colour food, Excellent Color shown on the label
1 sealed 2 kg bag of sinking feed, marked Sinking on the label
4 manufacturer labels: composition, analysis, batch number and best-before date

Guaranteed analyses noted on 5 September 2026 from the manufacturer's data sheets, Aquatic Science. The thresholds of 5 to 15 °C and 16 °C are the manufacturer's, and 12 °C is a cautious guide for the maintenance feed. Pellet sizes and buoyancy are shown on the packaging.

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 bag to open, and what it would cost on its own

The four bags in the parcel, ranked from coldest to warmest, with the price of each sold separately.

Four bags, only one to open at a time The pack covers the entire year. What decides which bag to open is the water temperature, the level at which your fish feed, and what you expect from the coming month.

	Wheat Germ Floating freshwater food forYour choice	Pond fish food, floating pelletsYour choice	Excellent Color astaxanthin food for koiYour choice	Sinking feed for sturgeon andYour choice
When to open this bag
Minimum operating temperature	5 °C	12 °C	16 °C	cold water
The temperature guide	Range 5 to 15 °C	From 12 °C	Above 16 °C	Cold water
Target fish	Koi and goldfish	All pond fish	Koi	Sturgeon and bottom-dwelling fish
What the pack delivers
Weight supplied in the pack (kg)	5 kg	2 kg	2 kg	2 kg
Crude protein (%)	32 %	33.5 %	39.5 %	47 %
Floating	Yes	Yes	Yes	No
Declared pigment	No	No	Yes	No
If you bought this bag on its own
Price	$72.00	$29.00	$49.00	$33.00

Wheat Germ Floating freshwater food for

When to open this bag

Minimum operating temperature5 °C

The temperature guideRange 5 to 15 °C

Target fishKoi and goldfish

What the pack delivers

Weight supplied in the pack (kg)5 kg

Crude protein (%)32 %

FloatingYes

Declared pigmentNo

If you bought this bag on its own

Pond fish food, floating pellets

When to open this bag

Minimum operating temperature12 °C

The temperature guideFrom 12 °C

Target fishAll pond fish

What the pack delivers

Weight supplied in the pack (kg)2 kg

Crude protein (%)33.5 %

FloatingYes

Declared pigmentNo

If you bought this bag on its own

Excellent Color astaxanthin food for koi

When to open this bag

Minimum operating temperature16 °C

The temperature guideAbove 16 °C

Target fishKoi

What the pack delivers

Weight supplied in the pack (kg)2 kg

Crude protein (%)39.5 %

FloatingYes

Declared pigmentYes

If you bought this bag on its own

Sinking feed for sturgeon and

When to open this bag

Minimum operating temperaturecold water

The temperature guideCold water

Target fishSturgeon and bottom-dwelling fish

What the pack delivers

Weight supplied in the pack (kg)2 kg

Crude protein (%)47 %

FloatingNo

Declared pigmentNo

If you bought this bag on its own

Analyses, temperature limits and buoyancy recorded on 5 September 2026 from the manufacturer's data sheets and packaging, Aquatic Science.

Estimate your
delivery time

11.2 kg parcel, four bags in a single box, sent to a pick-up point or to your home, as you choose during payment. France, Belgium, Luxembourg and Germany. The exact amount is calculated in the basket according to the total weight of your order.

Frequently asked questions

10 questions

6 key questions, 10 in the detailed view

What exactly does the pack of 4 feeds contain, and in what quantity?

The pack contains four sealed bags, four different formulas, 11 kg in total:

Bag	Weight	Protein	When to open it
Cold-water food	5 kg	32%	Water at 5 to 15 °C
Maintenance food	2 kg	33.5%	Water at 12 to 25 °C
Colour food	2 kg	39.5%	Water above 16 °C
Sinking food	2 kg	47%	Sturgeon and bottom-dwelling fish

The photo of the parcel shows the four products in their 5 kg size. The parcel sold here contains one 5 kg bag and three 2 kg bags.

Which of the four bags should you feed today?

Measure the temperature in the water, in the morning. The air can be at 20 °C above water at 11 °C.
Below 5 °C, none of the four bags is opened: your fish live on their reserves.
From 5 to 15 °C, it is the cool-water bag, 1 to 3 times a week.
From 12 to 16 °C, the maintenance feed takes over, 1 to 2 meals a day.
Above 16 °C, it is the colour feed, in several small meals.
The sinking bag does not follow this calendar: it is given at the bottom, for the sturgeon, all season.

How long will 11 kg last in my pond?

What pellet size do I need, and is it suitable for my fish?

Will the four bags keep for a year without spoiling?

A sealed bag keeps until its best-before date, an open bag does not. The bundle has a real advantage here: of the four bags, three stay closed while the fourth is being used up.

What ages in a pellet is the fat, and the bundle ranges from 8.5% fat in the colour food to 13% in the sinking food. Three practical consequences follow:

open only one bag at a time, the one the water temperature points to;
start with the fattiest bag, the sinking food, if you keep a sturgeon;
do not keep a bag that has been opened from one year to the next, even if there is some left.

Does switching feed four times a year upset the filter?

It is the difference in protein between two bags that weighs on the filter. The range runs from 32% on the freshwater feed to 47% on the floating one, and the amount of ammoniacal nitrogen produced at an equal ration follows that level almost proportionally, a difference of about 45% between the two extremes.

The routine that avoids unpleasant surprises fits in one sentence: after each change of bag, wait 2 to 3 days, then run an ammonium test and a nitrite test. If either value rises, reduce the ration before making any other correction. The full mechanism is explained in the article on the nitrogen cycle.

I only have koi and my pond water stays above 12 °C: do I need four foods?

This package makes the most sense once your water genuinely drops below 12 °C for several weeks a year, and a bottom-dwelling fish lives in the pond.

A sheltered, heated or south-facing pond stocked with koi alone mostly goes through two phases: the maintenance feed for most of the year and the colour feed when the water stays above 16 °C. These two formulas are also sold separately.

I don't have a sturgeon: what should I do with the sinking bag?

Does the pack contain spirulina or a colouring?

Do you need a pond thermometer, and where should it go?

How much the pack must cover each month

Enter the biomass of your fish, that is, the sum of their live weight. The calculation uses a feeding rate of 2% per day, the upper value for warm water, and converts it to a monthly figure. Compare the result with the 11 kg of the pack to see how many months of peak season it represents for you.

Total biomass of your fish

1 kg60 kg

0kg of feed per month

Monthly consumption at the height of the season, all bags combined, to compare with the 11 kg in the pack.

Corresponding daily ration

0 g per day

These guidelines apply to warm water and adult fish. Below 16 °C the actual ration is much lower, and below 5 °C it is nil: the pack then lasts much longer. The guideline of 1.5 to 2% of biomass comes from the FAO species fact sheet on the common carp.

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Pond fish food, pack of 4 formulas

The summary