Yes, do a google search on venturi gas injection.

In English:

Nice pics:

Venturi Injection vs Bubble Diffusers - venturi injection with ozone - bubble diffusers ozone

Venturi effect - Wikipedia, the free encyclopedia

and

Mazzei Injector Corp. - How a Mazzei Injector Works

The good thing about them: no decrease in efficiency/no cleaning, this is not true for glass diffusers etc! They need cleaned and sit inside the tank(Except for the Cal labs model).

No moving parts, high flow and positive suction(no back pressure).
the other good thing, they reduce flow, but not very much compared to many other in line devices.

They are small.

Regards,
Tom Barr

I am not sure really is there a need for inventing something that already exists, and can be bought here in Sweden for only 60 Swedish crowns. I use the Eheim Venturi diffuser and it works like a charm.

Here is the trick I use in my Juwel 180 liter tank;





Hi peterhaack, I live in Malmo too. I work at Zoo Giganten (fiskavdelning). You can always drop by for a friendly pint

Kind regards, Dusko.

Tell me.

is this venturi design made so you attach it to your filter as with reactors etc.?

or is mi supposed to be connected to a powerhead?

You should connect it to the powerheads out let, so water can jet into the Venturi.

Regards, Dusko.

Sintei - i did the same thing with my glassdiffuser and my DIY reactor - works better than anything i evet tried (+10 diffent diffusers):



I recomment anyone having a simple reaktor to try this method. I never seen pealing like this before...

CAL Labs makes something like this out of glass, works very well for smaller systems like 160gph or less with no head flow loss.

Here's a link:

CAL AQUA LABS - CO2 Glassware

Note, this method is based on the CO2 mist theory and these products and several DIY designs all came from the original hypothesis I proposed.

But many still do not believe the affect is real.
Rather than belief, I used an O2 meter, it's real alright, the details still need work and test, but the basics: does it work and does it make things easier to grow?

Definitely.

You may also use the CO2 mist method to determine if a particular species of plant is CO2 limited or not in the tank.

Simply blast the CO2 mist directly on the plant from a distance where the mist gently bathes/covers the plant with CO2 mist.

That, plus non limiting nutrients, you can generally grow anything and then vary the light as the independent variable.

Greg Fisk also did a similar thing as Anti P about a year ago after wondering about adding a venturi.

This disc approach is great for smaller systems IME and removes all the glass disc out of the tank where it gets covered by algae and also is just more stuff in the tank.

I bet we will see ADA make something like this later.

Regards,
Tom Barr


Regards,
Tom Barr

Sintei, what's the point with the filter balls? The CO2 should be pushed down out of the reactor by the waterflow? or do the CO2 mist rise into the balls?

The CAL inline diffusers are sweet little units, but we can't have alot of glassware lying about in this house W/ the Creamsicle Puma. That Crazy B@$tridge has got Racoon eyes when it comes to sparklies ! Bummer !

The thing with the homemade venturi was more that someone took alot of money to make em and all i did vas takinga asimpel piping and som heat made one in like hardly 1min and then a small drill di attach the pipng for gasthe rest its up to the pump you connct it til..

The diffusier you are using Dusko i used when i started with Yeast CO2 4 years ago and they work like a charm...

I dont live in malmoe but in a small town called Skanes Fagerhult so its a bit of road to get to you..

Love your tanks Dusko

/P