Anyone use Mazzei injector?

[uklau]

uklau,

Here is a thread how a mazzei is connected.

http://aquariumlife.com.au/showthread.php?p=16643

Thanks for the lead, bro. Hands are getting very itchy now......

[uklau]

uklau,

Oh..I went down to reef depot this afternoon and ask them about the mazzei injector. The guy who serve me Seet told me that he can't be sure the efficiency of the injector and also is very demanding on the pump as there are alot of back pressure. I think neon's design is pretty good.

Stephen, referring to the attached file, looks to me that a decent Eheim pump will do the job. If I read (& understand) the table correctly, the device works depending on the pressure difference between inlet & outlet.

Am I right to assume that the pressure at the outlet is almost 0 (not much back pressure, if the outlet goes back directly to the tank)? My understanding is based on my layman way of thinking (I'm not from engineering background). My calculation based on Eheim compact 1001 & universal 1046, the pressure at inlet is in the range of 1.05 - 1.41 Kg/cm2. If this figure is correct (don't trust me), even with some back pressure at the outlet, we are still getting quite a reasonable suction power (Pressurized CO2 will apply more pressure).

Would really appreciate some advice from forumers with engineering background on how feasible is this device.

BTW, Neon's design is definately a good one. Lucky that he's willing to take all the troubles to share his "product" with us.

[uklau]

I have to remove the setup in order to show you. Give me few days , I will try to remove it during my next water change.

Cheers

Thanks in advance for your willingness to share your design.

[stephen chung]

uklau,

I am not mechanical engineering train too. But, I was told by Seet that the back pressure from the inlet side can be quite big and it can bend the impella shaft.

[stephen chung]

I have to remove the setup in order to show you. Give me few days , I will try to remove it during my next water change.

Again, I am not preaching for just total CO2 mix , in fact I am using two methods in my 6' tank. 1st one is the external reactor I mentioned, the second one is CO2 mist method by using internal reactor UPS brand with Tom Barr's design concept + rain bar.

Cheers

neon,

I am using the max min reactor it seems to be pretty good just that It take too long to dissolve the co2. But your reactor seems a bit big. 3" diameter 1m long. whau....

[uklau]

uklau,

I am not mechanical engineering train too. But, I was told by Seet that the back pressure from the inlet side can be quite big and it can bend the impella shaft.

Thanks for sharing, Stephen. Need to find out more facts to stop my itchy hands Help, Neon....

[uklau]

uklau,

Here is a thread how a mazzei is connected.

http://aquariumlife.com.au/showthread.php?p=16643

Thanks for the interesting link, bro.

[neon]

Thanks for sharing, Stephen. Need to find out more facts to stop my itchy hands Help, Neon....

Pai seh , gave wrong measurement ! The length is about 18" including the cap . The diameter slightly over 2".

Attached photo taken and slight explanation . Hope this give enough information about the construction.

Front view :



Top view :



Length of the reactor :



Diameter of the PVC pipe :

[stephen chung]

ok..that size looks more "normal"..hahaha..But which side is the water inlet?

[uklau]

Thanks, Neon . The inlet should be on the top from the 1st photo, right?

[neon]

Yes, the inlet of water is shown in the 1st picture. Keep the CO2 inlet high , so that CO2 gas always trap inside the system.

My setup 2262 Eheim filter (1262 pump) --> PVC reactor --> chiller ---> tank

Cheers

[stephen chung]

ok..thanks..But normally the co2 inlet is as low as possible..So that the co2 has more time to dissolve as t rises to the top..Maybe I am wrong.

[neon]

Co2 may be pushed out of the reactor if it is too low. I think with the bioballs also help to trap more CO2 gas and water will spin the bioball instead of straight flush down if absent of bioballs.

If you can get a transparent tube , that will be better and you are able to see the reaction in action.

[stephen chung]

Yeah...but easy to have algae..I am already up to my neck with algae in my tank. Because I saw Azmi's design also. Is very similar. What you say is already correct. Will make it soon..

[uklau]

Anyone know of any shops around selling pneumatic stuff? I'm exploring other options of connecting CO2 tubing to DIY CO2 reactor. Thanks.

[neon]

Anyone know of any shops around selling pneumatic stuff? I'm exploring other options of connecting CO2 tubing to DIY CO2 reactor. Thanks.

Normally pneumatic is used for the liquid base dosing , no so much on gas mixing. I am not sure what is the purpose of considering this .

I had previously ordered 2 pneumatic pump from US direct and it cost me around $300-400 (can't remember) for the purpose of dosing liquid fertilizer during my long leave. The problem is not the pump itself , the problem on the sediment of the fertilizer is the issue I had.

[stephen chung]

Anyone know of any shops around selling pneumatic stuff? I'm exploring other options of connecting CO2 tubing to DIY CO2 reactor. Thanks.

I know there is this shop behind DSC selling pneumatic stuff. What kind of pneumatic stuff are you looking for? Valve? pump? What are you trying to do now?

[uklau]

I know there is this shop behind DSC selling pneumatic stuff. What kind of pneumatic stuff are you looking for? Valve? pump? What are you trying to do now?

Ha ha ha, I'm just trying to look for other form of connectors to connect to CO2 tube. Nothing so secretive. If I have something new in mind, I'll share it in AQ. By the way is 1/4" CO2 or high pressure tube a common standard?

Lastly, what is DSC?

[uklau]

uklau,

Here is a thread how a mazzei is connected.

http://aquariumlife.com.au/showthread.php?p=16643

Just an update. I have been corresponding to Dylan over the weekend (he is very helpful & very willing to share). He is using 1/2 of the power of a pump with 5100L/h (max height delivery of 3.4m) just to drive the injector . That's a great pressure & flowrate. Not too sure if Eheim 1260 is good enough for this purpose.

I guess I have to drop this idea since I do not need an additional of that powerful pump in my environment.

Thanks to everyone who had sticked your nose in this thread. Do update us if anyone of you decided to go ahead experimenting with this injector (if I can get hold of this injector locally, I'll still try to see how well it works with Eheim pumps or filters ).

[stephen chung]

Ha ha ha, I'm just trying to look for other form of connectors to connect to CO2 tube. Nothing so secretive. If I have something new in mind, I'll share it in AQ. By the way is 1/4" CO2 or high pressure tube a common standard?

Lastly, what is DSC?

DSC is over at kelantan lane. I don't know how you want to connect the co2? I don't know how to advice you.