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Guidelines for the amount (weight) of fish feed per day
You can use the table below to calculate how much food your fish need per day. For this, you must
first calculate the total weight of your fish in the pond. The easiest way to do this, is by converting
the length of the fish to the weight. Complete the table below and calculate the total weight of all
your fish.
How much food (in percentage of body weight) a fish needs depends on a number of factors, such
as water temperature, filter capacity and water quality (NH
• At a water temperature between 15-18°C: feed per day about 1% of the total weight of the fish.
• At a water temperature between 18-21°C: feed per day about 1,5% of the total weight of the fish.
• At a water temperature between 21-23°C: feed per day about 2% of the total weight of the fish.
• At a water temperature above 23°C: feed per day about 3% of the total weight of the fish.
The filter must be able to convert all waste to obtain a biological balance and a healthy water
quality. Regular testing of Ammonia and Nitrite values is necessary during the season. If these
values increase you will have to feed less.
The table is based on a water temperature between 21-23°C, in that case the amount of fish food
per day is 2% of the total weight of all fish in the pond.
30 cm
40 cm
50 cm
60 cm
Total weight of all fish in the pond x 2% = amount of fish food per day
Fish size Approx weight Number of fish
±60 g
15 cm
± 125 g
20 cm
± 350 g
± 1000 g
± 2000 g
± 4000 g
/NH
and NO
).
3
4
2
Total weight
x .........
= ......... g
x .........
= ......... g
x .........
= ......... g
x .........
= ......... g
x .........
= ......... g
x .........
= ......... g
......... g x 2%=......... g
+
7
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