DIY Automatic Fish Feeder for Aquaponics





Introduction: DIY Automatic Fish Feeder for Aquaponics

Do you have an aquaponic system? Cannot be there the hours that your fish have to eat? Big automatic fish feeders are quite expensive. Have a look how I made mine with 25 euros.

Step 1: The Concept

Here is a scketch of how it works. I found it here. There is a drill that while rotating carries the food out. The drill rotates with a motor and the food is contained in a bottle.

Step 2: Parts List

You will need:
1. a plastic bottle (I recommend you to use a normal water plastic bottle, the one I used was quite some trouble and I had to adjust some cardboard pieces inside)
2. 12 volt DC motor (I used one with gears to adjust the speed)
3. Drill (I made my own drill with a piece of plastic, see next step)
4. 12 volt adaptor (according to the motor)
5. Timer (if you have a big aquaponic system and you need lots of food, a one minute timer will be fine. Otherwise you will need a seconds timer, which is more expensive)
6. Wood
7. Plumbing pipes

Step 3: Making a Plastic Drill

I use a heating device and a stripe of acrylic to make my own light plastic drill. After heating the acrylic up, you twist it. Don't make the stripe too thick because then it folds up around itself and doesn't twist.

Step 4: Explanatory Video



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    what RPM was the DC motor?

    bro..can u pm me the schematic diagram??

    This is a really good home made auger.


    - 120 things in 20 years

    This is a really good home made auger.


    Just great! I was looking to learn more about this and possibly construct one from recyclable materials and your instruct fit's the build. Thanks to you & Aquaponics Survival Communities via facebook, I am able to find this information.

    nice job now... BIG BOX!!!!

    really really big

    Muy buenas! Congratulaciones! Have you tried to load the bottle to top and run it? I am looking at different designs to make 5L feeders that are robust...Gracias!

    nice idea, but the trasparent tube inclinate is better the food drop more easy and dont come back ! :)

    Would a stepper motor work?

    could i use a largeer tank like the ones for water dispensers like in offices

    I EFFIN LOVE YOU!!!! Couldnt for the life of me think of using a acrylic or plastic pvc strip to bend it like an archemedes screw. I was overthinking of using metal or finding a store that sell them >.< ($50 and the size is 5inch diameter, very exessive for a home grower). Although a suggestion of mine is having the length for the food to travel be decreased. Shorter equals faster, less materials and less work with bending the homade hopper screw. THANK YOU SO MUCH!!!

    to deqwer, you could plug your unit into a timer like a light timer and set it to feed your fish like twice a day or somthing and you could set it to only feed for a minute or 2

    i see you feed alot in the video what if i only want to feed a little amount of fish food