Introduction: The Fishtank Blender. "The Blender Tank"

Picture of The Fishtank Blender.  "The Blender Tank"

Is the blending power of your blender not as good as it used to be?  Has your blender stopped working altogether?  Did you get three blenders as wedding gifts?  Then your in luck.  Hear is a very eye catching fish tank that will get your house guests talking. 

Step 1: Will My Blender Work As a Fish Tank?

Picture of Will My Blender Work As a Fish Tank?

There are some considerations that make a blender a good candidate for making a fish tank.  First you need to make sure there is a good viewing area with the glass so you can see the fish.  The more water that can fit inside, the better for the fish.  If you do not have a blender and want to buy one for this project make sure you consider these factors.

Step 2: List of Meterials.

Picture of List of Meterials.

Little is needed to make a tank.  If you don't want to install a pump (and you don't have to) then nothing is needed at all.  Just get some fake plants and drop them and a fish in.  If you want your tank to be more high tech and have bubbles coming from the bottom to stir the water to help with the O2 levels then you will need to install a pump.  Hear is the items you need.
   The smallest pump you can find.  
   Clear tubing
   A bubble rock
   A one way valve 
The pump is stored in the bottom of the blender where the motor is located.  The one way valve is so water does not go back down into the pump and cause a short.

Step 3: Install the Pump

Picture of Install the Pump

Now that you have the parts and the blender you need to open up the bottom part of the blender where the motor is stored. The lid should be on the bottom of the blender.  There should only be a few screws to get out.  Once you have it open you need to see how the pump will fit.  For me I did not have to remove anything inside.  The pump was small enough to fit in between the wall and the motor.  If your pump does not fit, then you might need to remove some items inside the blender or modify the pump to get it to fit.   The one way valve also will be housed in this area so make sure there is enough room for it too. 

Step 4: Install the Clear Hose.

Picture of Install the Clear Hose.

Now that you have a spot to put the pump you need to feed the clear hose up to the tank.  You need to drill two holes.  One hole in the upper part of the blender and another in the same place in the lower part of the blender.  I used me Dremel with a drill bit to do this.  This will feed the air from the pump down at the bottom to the tank.  Feed the hose through the hole.  Connect the hose to a one way valve that will also be stored in the motor cavity.  Then connect the one way valve to the pump with another hose.

Step 5: Make the Hose Water Tight.

Picture of Make the Hose Water Tight.

I encountered a problem with making the hose connection not leak water.  Hear is a very simple way to solve this.

To make the connection water tight, take the bubble rock and connect it to the end of the hose inside the tank.  Then feed the hose back into the hole.  Once you feed the hose enough so the end of the bubble rock starts to enter the hole that you made, it will create a seal.  Push it down so it makes a tight seal.  No glue is needed so that there is no chance to contaminate the water.

Step 6: Does It Work?

Picture of Does It Work?

Once you have this done you can see if the system works.  Plug in the pump and fill the tank with water.  If some bubbles start to rise up then it works.  Since it is a very small tank you should try to regulate the amount of air that is going through the system.  On my pump there was a way to decrease the power to lessen the air flow.  If your pump does not have a regulator then you can bury the bubble rock in rocks or kink the hose to lessen the air flow.

Step 7: To the Finish

Picture of To the Finish

If everything works then put it all together.  Put the pump and valve in the motor cavity.  You can remove the power cord for the blender and put the power cord for the pump in the same place.  Put the cover back on.  Then put the tank on top of the unit as it should go.  That's it! your done.  Now have fun.  You can fill the tank with rocks and plants and of course fish.  I had a snail in mine for a long time and it worked well.

You might want to put some ventalation holes in the lid.  For my blender the lid has two parts.  The black rubber outer part and a clear plastic part that can be removed.  I drilled holes in the clear part but mostly I just have the clear part removed.


DrWeird117 (author)2010-11-26

Hate to be a Danny Downer, but this fish is unhappy as I would consider a bender a vase.

Q: Can I really keep my beta fish in a vase?
A: Yes it can, and has been done however, in order to provide your beta fish
with a healthy and happy life it is recommended against keeping them in a vase.

shaggs31 (author)DrWeird1172010-11-26

Thank you for your opinion but I will have to disagree. Some fish love to be nice and cosy. If you give a beta a rock to hide in he will spend his hole life hiding in it. He makes my son happy when he gets to feed him and that is a good life to me.

vinsslaurie (author)shaggs312011-03-23

Making your son happy is not your fish’s life goal; the fact that you think that is a “good life” is irrelevant as fish cannot speak for themselves. You can keep a betta in a vase, it will survive, but the healthiest environment you can provide it with is a filtered and oxygenated fish tank with lots of vegetation.

I work in a pet store and sell these fish in ridiculous amounts; people constantly buy them with fish bowls or small betta box kits, these fish will live, but not in ideal conditions. The best betta setup I’ve seen so far is a co-worker’s fish, it lives alone in a five gallon aquarium and mostly feeds from aniubias roots as it would in the wild. It’s thriving and wonderful to see.

shaggs31 (author)vinsslaurie2011-08-26

Just so every one is clear I do not care about the happiness of the fish. If I did then I would release him in a lake!

jfish4 (author)shaggs312016-10-15

its never wise to release fish into the wild where they dont belong, thats how you end up with pest species ruining native habitats...

vinsslaurie (author)shaggs312011-08-26

Betta fish don't live in lakes, so that wouldn't do any good. Also, just so everyone's clear, you're an asshole, why would you even get a fish if you're going to treat it that way? They may not cost much or do much, but they are live animals, they can feel pain and discomfort and it's cruel not to keep that into consideration.

artisandyke (author)shaggs312011-01-03

Yeah, because he doesn't have enough room to do anything but hide out. A healthy betta fish swims around, interacts with people and other things in its environment, and doesn't just hide in a hole!

Firefly845 (author)DrWeird1172011-05-13

I agree completely. Any fish should be kept in a +10 liter tank.

TheFishGirl (author)2015-09-17

you NEED a filter for any kind of fish!

AluminumFoilMaster (author)2015-06-27

And if you feel like you want a seafood smoothie...

Rubeus Hagrid (author)2015-06-08

then you turn it on lol

msminnamouse (author)2013-08-30

This still scares me despite knowing it can no longer blend.

SandraDau (author)2013-05-17

to mlein: I know what you mean. I had raised fish for a while and I feel like they like a lot of space too. I had a friend who had a fish in a those tiny round fish bowls and I told her I felt bad for the fish in such a tiny amount of space.

dead hawk (author)2013-04-15

I think you could improve it by taking the insides of the blender out and putting a air pump in the base so you could plug it in, and the buttons could be switched out for buttons to control LED lights

Rainh2o (author)2010-11-16

cool project, might be good for small shrimp and snails..but a little too small for any type of fish

shaggs31 (author)Rainh2o2010-11-16

I have had shrimp and snails in there. This betta in the pics have been in there for about 6 months now and there was a guppy that I kept in there for about 2 years.

Rainh2o (author)shaggs312010-11-16

I wasn't saying you couldnt keep a fish in long as the water is changed and you feed them there is no physical reason why they wouldnt live, its just to small for their well being that all...its still a GREAT COOL instructible

hhedin (author)Rainh2o2011-08-27

I can definately verify the water is being changed regularly I am the lady of the house who does the maintenance care for finny ( the fish) he is fed and water changed regularly.

mlein (author)hhedin2012-01-23

I'm sure you take good care of the fish and that is it is physically fairly healthy...but I can't help but think of this:
I'm sure you can imagine that like any animal fish are best kept in an environment that resembles their natural habitat, which is in a fish' case, rather spacious.

Psychological health is also very important, it would not hurt to size up it's aquarium a bit.
If you like you state care about the fish' happiness why not just try it?
You've got nothing to lose and the fish a lot to gain :3 Won't hurt anyone!
This is not an attack on your personally, like others here we just want to inform you and help you achieve what you seem to think is important, a good life for the fish!

I still think this instructable is great for constructing a humorous temporary tank to put a very limited amount of fish in when their main living tank is being cleaned! Well done!

eschuey (author)2011-12-28

It'd be cool to do this with a food processor or somthing, lol

3leftturns (author)2010-11-15

I was wondering when I'd see you post this. You should put an arduino in the bottom and hack into the existing switches to drive some RGB LED's underneath the blender bottom. Add a new label, and you now have "disco mode"

hhedin (author)3leftturns2011-08-27

I like that option, it should have disco mode, then its always a party with the blender beta.

yoshi1 (author)2010-11-20

Don't turn it on!!

Broom (author)yoshi12010-11-22

You didn't actually RTFA, did you?

yoshi1 (author)Broom2011-01-16

it was a joke

Broom (author)yoshi12011-01-31


Hard to underestimate the entire internet...

3leftturns (author)2010-11-18

This instructable is miscategorized. If the button gets pressed, it should be filed under the "food" section.

shaggs31 (author)3leftturns2011-01-13

waste not

beehard44 (author)3leftturns2011-01-11


artisandyke (author)2011-01-03

Nice idea for a plastic fish, but not for a real fish. This is way too small for a betta. Despite popular opinion, bettas need a MINIMUM of 1.5 gallons of water, 2.5 - 3 gallons is even better. They are tropical fish, and they need a water temp of about 80 degrees farenheit, so they need a heater, and they also need a filter.

kostica1 (author)2010-12-14

The only thing I don't get is that plastic plant. There are many live plants, that don't need maintenance. :?

ProfessorMcKillswitch (author)2010-12-02

warning: do not plug in blender fish tank

videogamemaster (author)2010-11-29

Leave the blade in there and you've gotta fishy smoothie! Nothing like drinking down some Betta Fish guts/scales/fins, seashells, rocks, and plants, eh?
No, but seriously nice idea. I'd probably open my blender up a rip the guts out it if I was going to do this (Guts = electronics. Sorry. I'mma tech nerd).

Try hooking up an air pump, heater, and a small filter to the buttons. Small heater, of course. Very low wattage for a one gallon bowl/aquarium. When you want to give it heat, BOOP, push the button and your fishy gets warm. Fishy wants bubbles? BOOP! Bubbles. Dirty water? BOOP. Filtered.

rockerape (author)2010-11-28

Juicy instructable!

PaHalloweenFreak (author)2010-11-22

Very cool idea! I have to agree with Brastic! But adding a sound bite of a motor running when one of the buttons was pushed would be even more hilarious just to see the mortified look on someone's face. LOL!

AmyLuthien (author)2010-11-21

Nifty idea! Might be fun to keep dwarf frogs in one of these hehehe! :D

beehard44 (author)2010-11-21

i can just imagine a visitor plugging and turning it on...

Brastic (author)2010-11-18

I would install a second air pump that would dump a lot of bubbles if any of the buttons were pressed. It might scare a couple of people who just could not walk away with out pressing buttons.

tkjtkj (author)Brastic2010-11-20

Nice addition!!

pork_hunt (author)2010-11-20

I had the same idea earlier this year, after we moved house, lost a blender and found it again! Mine has a goldfish, a snail and a real plant. Once I realised the actual level of feed my fish needed (one pinch 2-3 times a week) the water has actually stabilised and very seldom needs cleaning. I was concerned about whether or not this would be cruel on the fish, but after spending the last 4-5 months with him, I feel comfortable that it isn't. YMMV

resonate (author)2010-11-19

I did this exact thing in 1999 and my beta jumped out an killed itself one day when I left the lid off... I found him dead and dried up behind my desk... I took it as a sign he didnt appreciate the notion of living in a blender...

PATALIM (author)2010-11-19

I think even if you left the motor in and plug-in the blender and somebody tried to blend the fish it will fail with all those marbles and stone in there -- fish still safe!

shaggs31 (author)PATALIM2010-11-19

ya the blades are covered so the fish can not get cut on them.

eliagp (author)2010-11-18

there was an "artist" who did this in Chile, putting many fish in blenders, and left the blenders connected, so the visitors could actually blend the fish. There were many complaints, and finally they let the guy show his art, with the cables unplugged.

sqeeek (author)eliagp2010-11-18

I find it interesting that people would actually blend the fish. Maybe that's the point he was trying to make.

ropertron (author)2010-11-18

Glad someone has tanken some more care over there fish tank. I did this a while ago for an art project, raising the question as to 'were we more dangerous to the fish, than having the fish in the blender'. Especially the boys who would drop things into the blender and tap on the sides. I had left the blades in but put silicone on them to make them blunt. (Obviously I had taken out the motor, so that even if some evil sod had plugged it in, the fish was safe). The concave nature of the glass also meant that the fish was not always visible, making viewers jump as it swam around the tank. Of course that was a while ago...
Now the blender is a fetching desk lamp on top of one of my speakers, with an energy saving light bulb where the blades were and an on/off switch where the blend switch was. Good times! Good Work!

freakyqwerty (author)2010-11-16

This is such a good idea!
What if the buttons on the front were use like as food dispenser! maybe...

shaggs31 (author)freakyqwerty2010-11-16

after I built this I looked online to see if there where more of it's kind out there. I found one that turned a light on with the buttons below. I din't have skills with electronics then to do something like that. But that would be a good idea.

freakyqwerty (author)shaggs312010-11-18

Yeah that would be a bit hard although, a light would be easier any way you'll get my vote!

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