Randy Holmes-Farley, Ozone Reactor

[MantisShrimpMan]

Randy, I’ve read your articles on ozone but I’m not completely sure that I understand the design of your ozone tubing reactor. Can you go into a bit more depth and provide some photos and/or instructions?

 

[Randy Holmes-Farley Verified Community Expert]

I don’t have any photos to show, and I haven’t had it up for a long time, but I do think it’s a good design.

The basic idea is to add tank water and air/ozone at one end of a long coil of polypropylene tubing laid horizontally. The water and air mix as it circulates round and round, and then it is delivered over GAC before the water returns to the tank.

 

[MantisShrimpMan]

I don’t have any photos to show, and I haven’t had it up for a long time, but I do think it’s a good design.

The basic idea is to add tank water and air/ozone at one end of a long coil of polypropylene tubing laid horizontally. The water and air mix as it circulates round and round, and then it is delivered over GAC before the water returns to the tank.

gac?

also, I understand the premise but I’m moreso curious as to how the water and air mix well, I don’t understand how a Venturi works In this instance

 

[SPS2020]

Quick Google: Granular Activated Carbon

 

[Randy Holmes-Farley Verified Community Expert]

gac?

also, I understand the premise but I’m moreso curious as to how the water and air mix well, I don’t understand how a Venturi works In this instance

The venturi here is just a way to get the air and water into the tubing together. Inside the tube, there are sections with water on the bottom and air on the top. Those circle around the coils and eventually are released. There are not a lot of fine bubbles main maintained inside the tubiig.

 

[Joe's Coral Reef]

Instead of a venturi could use a pump with a needle wheel? Basically a skimmer pump

 

[MantisShrimpMan]

Instead of a venturi could use a pump with a needle wheel? Basically a skimmer pump

In the BRS video for Reff Octpus VarioS pumps they say something to the effect of “the skimmer pump version of the VarioS benefits from all the same great features, but includes a Venturi…” so Im pretty sure a skimmer pump IS a venturi?

 

[Randy Holmes-Farley Verified Community Expert]

Instead of a venturi could use a pump with a needle wheel? Basically a skimmer pump

Yes, any way of combining the air and water. I just happened to have a venturi from an old skimmer.

 

[MantisShrimpMan]

Yes, any way of combining the air and water. I just happened to have a venturi from an old skimmer.

Hey @Randy Holmes-Farley , I’m curious if you’d be willing to confirm if something like this would work for your tubing reactor?

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Also if there are any resources you can point me towards that might help me understand what I’m looking for a bit better? Like, I know a Venturi pumps in air/gas (in addition to water) I just don’t have any real world applied experience with venturis so I’d love to see some resource explaining them, assuming I have the wrong idea with that skimmer pump^.

Also, do you have any opinion on the Avast Mutiny Ozone reactor?

 

[MantisShrimpMan]

Also @Randy Holmes-Farley , if I were to make your tubing reactor, would you say theres any essential benefit to plumbing it straight from and/or to the DT, or is the sump okay? Same thing as the age old “how to plumb in UV” I guess… like I’m curious if it should be a closed loop in the sump, or if it should come straight out of the DT straight back in… etc

 

[Randy Holmes-Farley Verified Community Expert]

Also @Randy Holmes-Farley , if I were to make your tubing reactor, would you say theres any essential benefit to plumbing it straight from and/or to the DT, or is the sump okay? Same thing as the age old “how to plumb in UV” I guess… like I’m curious if it should be a closed loop in the sump, or if it should come straight out of the DT straight back in… etc

Smp is fine. That's where I had mine. Mine was a loop off the sump (actually teed off the main return pipe to the display).

Any pump that is not too fast is fine. If the ozone is added before it, then it needs to be ozone safe. I added it after the pump via an old venturi.

 

[reely989]

Not to resurrect an old thread, but I've been interested in trying this too. What kind of pump strength am I looking for Randy if I were to use say 50' of tubing? Would one of the maxijet style work that has an air input already built into it?

 

[Randy Holmes-Farley Verified Community Expert]

Not to resurrect an old thread, but I've been interested in trying this too. What kind of pump strength am I looking for Randy if I were to use say 50' of tubing? Would one of the maxijet style work that has an air input already built into it?

I'm not sure, but it will depend on the diameter, whether it is completely flat or has some ups and downs, and what flow you want. I noticed with bubbles in it that when the water pushes up a small rise it slows then speeds up as the water goes downhill.

I teed off my return pump.