Now you don't need to worry about buying an expensive automatic feeder for your aquarium.
Here is a cheap alternative you can make in a few minutes without electronics knowledge.

Step 1: Materials needed

1 Working battery clock or clock parts.
1 Small plastic can (must be light weight)
2 Thin neodymium magnets
1 Plastic pen or plastic tube
<p>If you make two openings in the can you will get a 6 hour feeding interval. By using a can which has a lid bigger than the base you will have food always coming towards the opening.</p>
<p>Its quite intuitive and ingenious solution, i've built one on the same lines but i dont get the need for couple of things</p><p>1. The magnet, i could directly fix the box the hour clock hand</p><p>2. The pen chop, i found it easier to fix the plastic box directly to the hour dial than through the pen cut.</p><p>Also i guess havinh a pen cut and magnets will add more weight and the dial.</p><p>Its posible i could be missing the primary reason for those, if so let me know.</p>
I have an auto feeder that I bought at a pet store. This idea is great as it allows the fish to get fed at the same time each day and they never miss a meal and allows you to leave on holiday for a week or two. My feeder allows me to leave for a month without worrying. Anyone have any ideas how I can keep my water level in the tank constant? If so let me know and I'll be all set for another vacation! BTW, The feeder is placed on top of the tanks allowing the plastic can to rotate freely. Thanks for sharing your idea!
<p>use football valve like the one which is present in Air Coolers</p>
How many gallons is your aquarium? If large enought you could implement some sort of device, that works the same way as a toilet, when water drops below certain point then tank fills appropriatley. Viola,
<p>Great !!!!!! thanx alot.........</p>
Very Nice, a simple and effective idea. <br>Congratulation.
Thank you so much, gonna build mine soon :) I have some modifications in my mind. Don't worry I will put my pics.
Some advice: don't use automatic feeders for your aquarium. There are only disadvantages:<br>1. The food might cake together from the heat of the lamps, it is possible to disturb the working of the device.<br>2. The food needs to be stored at room temperature, the heat of the lamps will cause the vitamines to break down.<br>3. Every week fishes need to get a day of fast. Also 2 days a week it's important you give your fish frozen food to keep them in optimal health.<br><br>Feed your fish by hand each day 1 time and use the weekend or vacation food if your out.
But, if it away from lamps and used only when it's impossible to feed them by hand? Sorry about the english, my default language is PT-BR ;)<br>
If it's impossible to feed them by hand you have to use weekend or vacation food. During non-vacationperiods you have to feed them by hand to make sure there's variation in their diet.
Impressive. I'll make one today.
Nice work! i was looking for a autofeeder. Now i can make this gadget. Thanks for the idea.
great job .....
That is pure brilliant! So simple and elegant.
geddemnit!! you are so genius..thanks a lot for the instruction
I have been thinking of similar device but the plans which have crossed my mind were all too difficult to construct, but this instructable is cool. It's affordable and simple! I'm gonna make it myself, thanks a lot for sharing elufo!
This looks great, I'll be watching for a cheap clock to try this!<br /> Question:&nbsp;Is there a problem with the fish food missing the box and openning or does the constant rotation ensure food always gets thru the hole and into the tank?<br />
Second one ;)
wow. cheap, simple and easy. very nice. 5*
nice device indeed...by the way, do i need to set the clock always after every feed it makes?..or it will just go on in one set only?...<br />
You only need to set the clock the first time.<br /> The device feeds one time each 12 hours until battery runs out of energy.<br />
Very nice device, indeed. I should try this as well.<br /> My fish needs different food: chips, flakes and small sand food.<br /> Do you have any idea to make the same kind of feeder for different food types?<br />
wow....nice job bro...<br />
First of all great Instructable. This is very similar to one I bought at my local fish store. The only issue is that if you have a tropical tank there will be some humidity. This means the food could get damp in the feeder and spoil. Again great idea.
How long is 20mm in American inches?
Any way to make the period of time that it feeds any longer??
Where do you put this?
There are many ways to put it. I used a piece of plastic across the aquarium edge.
How do you remove the chlorine ?
Just looking at the pictures on this page, I'd say that it was meant to overhang the edge of the fish tank. But, that's just a guess.
nice i will HAVE to make this...much cheaper then the ones in stores... i see um for 20-50 bucks!! thanks i will now be able to sleep in more at times :P
dont you have to put in more food every day?
It depends of the size of the plastic can. Mine at medium filling is about 1 month.
impresive! check this out f u like fish <a rel="nofollow" href="http://www.livaquaria.com">http://www.livaquaria.com</a><br/>
haha i made this and at 10:30 tonight i can rate it! Ill be back dont worry!
Nice! Could you post pictures of yours?
haha i cant now.. my clock was too big and it all broke...i needed the smaller clock but i went to walmart and got a real one for only 12 buck but good instructable! im gunna do a 5* because its a great idea and it was fun!<br/>
Thanks to all for your comments :D
I've been thinking about this problem in my head for some time - never could quite work out a good mechanical solution. What a nifty device!
Very cool!
This is a genius idea! Thanks for sharing. :D
Thank you so much, this is exactly what i needed i can't wait to make one
Wish I had this over spring break, fish almost died xD
When I was a child my dad had a closed biosphere aquarium that we never had to feed the fish. We could not even get to the top of the tank. Go figure.
Yet another reason I need to get an aquarium!

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