Venturi Experiment - Small DIY Venturi for Hydroponics, Aquaponics or Aquariums
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- เผยแพร่เมื่อ 24 ม.ค. 2014
- Rob's DIY Venturi • DIY venturi, a few eas...
I recently watched Rob Bob's (bnbob01) DIY venturi video and it looked like so much fun I thought I'd try my hand at making a small version out of easy to find local parts. I hope to be able to use this in future DWC or recirculating hydroponics experiments.
I think it would be very useful in small hydroponics, aquaponics or aquarium applications for water oxygenation.
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Thanks for watching!
mediamaker2000
![DIY Areator Venturi that produce fine micro bubbles [Tutorial]](http://i.ytimg.com/vi/XZ4-jbZo1oo/mqdefault.jpg)
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I only have one air pump and two aquaponics systems so this is excellent help and i am off to build one now. thanks very much for the video.
That's really cool Dale, it was nice to see it demonstrated like this in such a clean manor. Well done!
Thanks Wayne! I wanted to be able to see what was going on under the surface and with it being such a small set up, I was able to do that with just an aquarium. For something like Rob Bob's set up, you'd almost have to have a waterproof camera housing which isn't cheap. I'd hate to have +Rob Bob chance hurting his awesome Canon SX-50.
Thanks for the upload! Had just about everything needed ..my air pump went south and my fish have been without for a minute.. I had a little issue at first because the 3/8 hose was blocking the flow,slightly raised and bubbles
Now that is a good idea. Eliminating the need for air stones is a big help.
And fun! That Italian guy came up with a truly great invention!
That's a great set up Dale.. Would work great in a large aquarium too methinks.. Are you going to give DWC a crack with one of these jobbies?
Thanks for the mention sir..
I give this one a wet & bubbly thumbs up ;)
Thanks Rob! I will sometime but I doubt I will before winter ends.
YW sir! I like to give credit where it's due. Just wanted to see if I could make a baby version of yours ;-)
Great video you can just stick the 1/4 airline back to where the propeller is and attach a shut off valve to control the air intake, that’s what I’m doing with my DWC, and got it on a timer 15min on 45 min off, and I have 2 airstones connected to a air pump ever since I started using both oxygenators I’ve never gotten root rot, awesome post
Looks great my friend ! I look forward to seeing more of this project!
Thanks Stephen! I may have to use it on future experiments!
Very nice and informative. Thank you!
Love this adaptation- still VERY relevant - thanks!!
The only detail I simply cannot put to rest (and that I wonder if it is part of my inability to make any DIY venturis work) is what sort of pressure it requires for proper flow?
With gravity and a small-ish (250-300gph) H2O pump in my little pond (ie., a Venturi would have to be situated between pump and filter for any decent effect) you’d think I’d be able to make something that would work!
did you sort it out? the city councel used to give them away for free and could see how much current each divice in ur house was using. You would turn the device on and off and see the difference in total current used. I'm wondering if an air pump uses less power then this pump and venturi set up.
Great job..I'll definitely use the adjustment valve 😊 Thanks
That is pretty awesome. I may have to try that in my setup. What is the flow rate on that pump? Would this work in line?
Great video! My grandauhters and I would love to build one for our hydroponic DWC this Summer! Any chance you would share the listing of parts for the pump and its fitting sizes? I want to go down to our local hardware store and build the entire unit so I can compare it to a traditional airstone and pump! Im betting this unit will work better and more efficiently and hopefully cheaper than the traditional setup. Can you aid an old man out ? Thank you for your efforts and time,Sincerely,Papa
This is not fair that they have done this to your clip Dale.....
This is your original clip & would be helpful to many & you deserve the credit for your build/clip...
Is there any way we can help out ?
What did they do to the clip?
Aeromixer
Hey there nice idea! Does it also work if I were to pump water eventually upwards in an ebb and flow system?
Thanks
Thanks for this video! I adapted your technique with some local parts I found from the big orange store and got one working great! I had to modify the design slightly to work with parts I could find, but it's the same concept really. It's currently aerating an 18 gallon tote overnight preparing for new plants tomorrow.
Thanks for watching and commenting Jackal! Would love to see what you came up with! Ah! You play with Arduinos too?! Very nice!
mediamaker2000 I used to mess around with Arduinos as a hobby. Haven't done it much in the past couple of years. Here's a picture of the setup I ended up with: imgur.com/VtxdiI5 I did have a question: do you think using a larger output on the pump (that's the smallest one) and reducing down to the 1/2" would put more pressure in the tee and result in more air? Seems like yours is getting a bit more bubbles than mine.
Jackal858 ... I ask because it seems like most pre-made venturis and diagrams have a reduction in diameter at the point of air entry: imgur.com/cbg14Fa
Jackal858 Sorry to bomb your video! Decided to put together a parts list of what I got from Home Depot to make mine, just in case people are looking for parts from there: i.imgur.com/JlIROOa.jpg
Jackal858
Very nice! Thanks for posting these!
Nice job giving credit and for your creation! Were you able to measure a difference in D.O.?
That is pretty cool Dale. I have a 55 gal aquarium just collecting dust. I might try on of these. Thanks. I would give this a H20'd Thumbs up :)
Thanks Rick! That would be cool! If you need any parts, let me know!
Love the H2o thumbs up! TY!
You get far better oxygenation when you route the air line from the surface into the center of the pumps impeller on the input side of your pump. The vacuum pressure at the center of the centrifugal pumps impeller is stronger and the action of the high speed impeller blades also churning the oxygen into the water has a synergistic affect. You do not need any of the T's or other fittings either, simply drill a hole the size of you airline into the front of your pump so it protrudes into the center of the pumps impeller. Hope this helps you or anyone else.
***** I actually tried that and also tried inserting air at the input and output. I got serious cavitation doing on the input side with no gain but actual loss on the output side from putting the air in from the input. I wonder how much pump siz is a factor.
@@mediamaker2000 your right hes wrong
wow, were those bubble so small at the end, they were just floating around in the water?
hi...if i use a filter so is it posible if no need to use a pump for oxygen?
or the filter already came out with a oxygen?
Would this effect work if the tube inserted did not have a 45 degree cut at the base of the inserted part? When you buy a power head that has a hole for the venturi effect, it is not slanted, but still sucks in the water. Any explanations???
Thanks
hi! do you, or someone here, know if one could build an airlift/geyser pump on the outlet of a venturi like this? and, does someone have footage of this or a usefull link?
what would happen if you pumped more air in the air line with a air pump I think im going to try that
Helo yes can this device be use in carryon for airplane travel???
What size pump are you using?
Looks like its putting out some nice air & circulating the water really well. I think it would work great In a DWC system. You didn't test that out in the kitchen did you. I pictured you having the tube going the wrong way & spraying down the kitchen-LOL.Well done on the video- you had some great footage in there. Thumbs up for Ricks comment !!!!
I didn't figure I'd be able to make it work actually but it wasn't too difficult. I think you're right. Using it in DWC would be the way to go for this size set up. Nope! I made my accidental fountain right there in the grow room. Wasn't too bad of a mess. More of a shock than anything lol Thanks Larry! Yea, I liked Rick
s comment a lot! lol
what os the blue thing call?
Thank you for sharing this idea. May I ask if this could supply enough oxygen for 2meters width and 8 meters long DWC set up? Hoping for your response. Thanks in advance
how do you check oxygenation?
That was an interesting informative experiment. thanks for sharing !
Keep the info and updates growing our way :-{}
Thanks much! It looked like too much fun not to try it!
This is nothing short of genius good video
Thanks! ***** I couldn't have don't it if Rob Bob hadn't shown me how!
Perfect video thank you! Made it in a few minutes! Do you think this will work well for DWC, looking at saturating dissolved oxygen in water because of high water temps! Cheers!
Awesome venturi, the small bubbles look excellent o2. If I add a venturi tube to the down pipe of my bell siphon it should create the same effect?
Thanks Enrique! Since I've not yet made or used a bell siphon, I can only say that I think it will work on any 1/2" pipe with a flow rate of 100 GPH or better, preferably 200 GPH or higher. I hope that helps!
well if my calculations are correct the lph of the bell siphon is crazy quick. I believe is has a lph of at least a 1000lph. and i was planning on adding a small air line tube like the new water pump nowadays for aquariums. with an anti return valve
I wonder if using a standard aerator for a sink would break up the bubbles more.
Great minds think alike LOL I tried that and the aerator actually can fit in the tubing but there just isn't enough pressure to drive it with a hydro pump :-(
akvaryum dekor
what size and kind of T is that?
Does the length of the airhose make a difference for suction?
i wouldn't know, but in my way of thinking i don't see why that would matter much. i could be completely wrong, but as long as there's air in the tube i would imagine it would work just as well at any reasonable length.
Nice demo. I saw one a while back where it was so powerful that you could no longer see the fish, lol. He didn't leave it on though.
Thanks Slee! I saw that one too! Justin Edwards had sent me the link. Is this the video you're talking about? Venturi air flow.flv
mediamaker2000
That's the one, haha. Poor fish.
I tried something similar a couple of months ago, but sadly a hopeless algae issue popped up in the fish tank. I belive the aquarium received too much light.
Hope you get better luck with your project, than I did. :)
Best wishes,
Halvor.
Thanks Halvor!
I think I'd try just using it in a DWC to start where hopefully there wouldn't be enough light to cause me any issues. Did you have fish in your fish tank?
mediamaker2000
Yes, I had a bunch of guppies. Maybe I was just unlucky, so it will be interesting to see if others get the same issues with algae. Thats so nice with YT, there`s so much to learn from eacothers experiences.
Anyone tried a Speece Cone?
I like this idea ... I assume you can inject oxygen into the water and the roots without paying for an air pump and the electricity to run it, not to mention the greater simplicity and lesser materials. Great idea.
I am hoping so. I plan to do a couple of builds this winter to see if it worthwhile in actual grow systems. Thanks so much for watching and commenting!
nice video
Put the air hose at the inlet of the pump. The pump breaks up the air bubbles even more and makes them ultrafine. When I did it, I was using an air pump rather than using the natural vacuum. I didn't try it without it.
VERY nice! and cheap too!
What kind of bomb is the one presented?
The smallest bubbles are always more efficient, but this is fine for aquariums and hobby scenarios.
😯
Try adding a Speece cone to this. Simply put a right angle pointing down and then a cone shape, possibly just an adapted plastic soft drink bottle. Trapping the bubbles under the flow breaks them down much further. Check this vid th-cam.com/video/6thCFEWWSrw/w-d-xo.html
its a vacum
zero nano and zero micro bubbles
I'm going to have to stop watching hydroponic videos or I'll end up with a garden full of IBCs.
LOL Can't wait to see that! You do like fish right Brendan? ;-)
:D
Great! This is more my size. lol
Thanks Lois! Mine too! LOL
venturi's are not efficient at all at aerating the water, as in order to have an effect, you need pressure from your pump, which means you decrease pumped water volume
show proof
lol it will eat your roots in a dwc