Feeding your aquaponics fish is one of your daily tasks when running
an Aquaponics system. It is vital for the fish and in turn essential for
the production of plant nutrients. In this article we’ll talk about the
what, when and how to feed your fish. We’ll also talk about using
auto-feeders for the ones among you who like to automate life!
Most fish are not picky on feeding schedule; indeed in the wild there
is no such thing as regular feeding. They will adjust their metabolisms
and growth rates according to food availability. So if you want to grow
fish quickly, simply feed them often. However, be careful with crowding
because a population density which is too high will make the fish
labile to disease outbreaks. With regards to the actual amounts of feed
per feeding session, you should give them as much feed as they can eat
within five minutes.
Many automatic feeders are available, differing in complexity and
price. However, you can get simple cheap ones which will do the job just
fine. You should set the feeding times at once or twice daily, possibly
more if you want to grow fish quickly and have a low stocking density.
Using an automatic feeder does not mean that you can stop checking on
you system daily, because if you do, you won’t know if anything goes
wrong with the system.
With regards to the actual feed, most people opt for commercial feed,
which is an excellent choice. Commercial fee is either of the
omnivorous or carnivorous type and these will differ in their quantities
of protein. Check with your local fisheries department for the most
suitable one for the particular fish species you are growing; though
most fish thrive well on both. Feed also comes in different pellet sizes
– you should get the small ones for young fish and larger ones as the
fish grow bigger.
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Many Aquaponics gardeners grow their own fish feed to drastically cut
costs. The most commonly grown of such feeds is duckweed, a fast growing
plant that is rich in protein. You can grow this in a separate tank or
pond. To provide more protein, you can also grow worms and black soldier
fly larvae. You can also feed your fish some garden scraps. For
example, most omnivorous fish will enjoy bland-tasting plants and
vegetable, such as lettuce. Be careful that the plant-food you give to
the fish is not covered in pesticides or other harmful chemicals.