DIY internal Reactor, great for Yeast CO2 users!

I have been trying to clean out all of the algae I can find in my tank, an almost impossible job. One problem is that algae is growing inside the viewtainer part of my venturi reactor, and it's construction is so flimsy that I can't do an effective job cleaning it out. So, I made another one, with some changes. First, I discovered the secret to finding viewtainers in the stores. Orchard Supply Hardware keeps them in the tools section, where it is very easy to overlook them, but after searching the entire store I found them. Only $2 for a 2" diameter by 6" long version.

So, here is what I ended up with:




This one is made from my Maxijet 600 powerhead. I have the outlet going into the side of the top of the viewtainer instead of down thru the top to an elbow. It is a bit off center on purpose. The purpose is so I can use the existing suction cups on the powerhead to mount it making it much more securely mounted. Next, I have the CO2 inlet coming in thru the side of the viewtainer instead of thru a long tube down from the top. This makes it easier to brush out the inside. Finally, I have a coarse sponge on the inlet to the powerhead to keep baby shrimp, etc out. Tomorrow I will see how well it works.

Edit: It works just fine. Smaller CO2 bubbles coming in, since they go thru a little airline connector, and it starts producing a little CO2 mist almost as soon as it starts up. It quickly builds up the CO2 to around 40 ppm with no problems at all.

 

Tom,

I noticed the other night when the reactor was turned off (and the lights as well) that the CO2 buildup was bubbling every so often, like 5 minutes or so. I thought nothing of it, because that is what the burp hole was designed for.

Well, I decided to watch it just for curiosity's sake, and it turns out that it doesn't even build up close to the burp hole. Instead, it is burping out of the powerhead intake! What do you think of that?

Here is a pic of it, although it has moved to the outsource of the filter now:


Current placement:

 

Makes Sense

That makes sense. The burp hole works while the reactor is on. Guess I should have put a little more effort into the thinking process first. I hate getting older.



Thanks,

 

Hey Tom,

What size power head do you recommend for this reactor?

I assume that there's an optimum size that will provide good mixing to dissolve CO2 and shoot out the small bubbles without ejecting large bubbles and wasting CO2.

Also, did you try other diameter reactor tubes or just this one because it was easy to find and worked well?

Thanks!

 

Cool. Do you happen to know the flowrate at 0 head for that model? I was flipping through the That Fish Place catalog last night and the rio's they offered started at the 400 series model which would probably be too strong based on your comments...

EDIT > Never mind, I found it at D&T Aquarium Supplies for $9. Pumps 120 gpm at 0 head and 85 gph at 1 ft of head.

 

Hey,

can you recommend something as a replacement for the viewtainer as i cannot seem to find them in Canada, specifically Toronto.

Thanks

 

i guess you guys don't like newcomers...

 

I don't think your conclusion above is sound...

If you're handy with PVC pipe, that would work fine. I'll let some others with more experience building this particular reactor themselves.

Meanwhile, I hope you don't think this is a beginner-unfriendly site, because my experience has been just the opposite.

 

It is advantageous to have a transparent cyclinder like a viewtainer, but it isn't essential. The transparent cylinder lets you see what's happening inside, and lets the reactor serve as a bubble counter too. But, viewtainers are not at all made of thick plastic, so you could use half of a plastic soft drink bottle, or some other clear plastic bottle. You just have to be willing to experiment.

 

Dear All,

I have a long ~30lts tank. I found the methods described in this forum really work.

I have found an empty tube obtained from my branded vitamin c effervescent tablet product. I am sure the material is absolutely non poisionous.

Then I drilled three holes to connect the CO2 supply with an atomizer (I mean a $1.5 gas stone) inside the tube, connect the venturi loop, and plug to the powerhead like a silencer to a gun.

I am now getting misting with lower CO2 rate (bubbles / min). The tube is 10 cm long x 2 cm in diameter. It works very quite and no abrupt bubbling.

It is recommended for small tanks like mine.

Thank you for all your contributions.

 

I was reading the instructions on how to make a diy co2 reator using a powerhead, which I have. It says you need an OD Viewtainer. What is this?

One person used venturi loop. What is this?

 

Viewtainers are sold as storage containers for workshop use - for screws, nuts, bolts, etc. The clear cylinder lets you see what is stored inside, and the slit cap lets you squeeze it to open the slit so one screw drops out. Once I got my brain engaged properly and understood this, finding them in Orchard Supply Hardware became very easy - I looked in their home workshop tool area. Before that I couldn't find them anywhere. Now I suspect they are sold in many stores, but just not featured in any way so they would be easy to find.

When you buy one on line the shipping cost is almost as much, if not more than the cost of the viewtainer, so finding them in a local store is a good idea.

 

powerheads

Hi, I am new to the site, but i have been working with DIY CO2 for a while. I was doing some research on reactors, and I stumbled across this site.

I see that for your reactor, your are recommending the Rio 180. Has anyone here tried to use one of the Rio 600+ with the Venturi Intake? I am curious about this as an option as it would seem to be tailor made to get the CO2 chopped into the water whether as the main CO2 input or from the venturi loop.

Also, as someone who does not possess either of the Rio pumps listed above, do you happen to know if standard size airline is compatible, or is it another size?

I was also considering an Aquarium Systems Maxijet Powerhead...any pros or cons there?

Thanks,

Mark Koelsch