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Discussion Starter #261
Joraan,

2 things to reduce the noise:

A.
First off if the pump touches the glass the noise tends to spread much more. Even through suction cups. You may try to let the pump hang suspended.

Another ultra clever approach - someone here I think stuck a 1/4" long piece of bamboo chopstick at the end of the CO2-tubing. Advantages - you end up with small CO2 bubbles that hit the impeller much softer. Disadvantages - grey bacteria slime grows on the bamboo the bamboo gets plugged up gradually and needs to be replaced every so often. You can try a wooden airstone (sold for saltwater skimmers), same issues with it though - there is something in the CO2 that these bacteria that form the grey slime like.

B.
There is a good reason why Amano keeps his pH at about 6.8. I'm going to go ahead, step back, an assume that 67K viewers of this thread are unaware why and are looking for crazy efficient ways to disolve more and more CO2. I'm not going to say why Amano likes pH of 6.8 because the reason is so simple that I might insult someobody's intelligence. But I'll say something else - the super-duper Chinese-Elite filter disolves more than enough CO2. I'm currently using it on a 180 gal. tank and the pH has dropped form 7 to 5.2.

My point is - if the noise really bothers you read up and learn how to run a planted tank propely with very little CO2. Don't be like all of us using stupid reactors to drive pH way down (look at mine - 5.2!) and deal with issues. Simply put - if your tank is setup right you will be able to do perfectly fine with a completely noise free sintered glass diffuser. Like Amano. Read my "Dummy Questions" here on APC if you care.

--Nikolay
 

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funny you wrote that niko, i was just going to post the same. There is 1 major problem with this reactor - the noise. It is driving me insane, the constant, never ending click..click...click sound.

I have the reactor surrounded with soft sponge and it didnt help much, not sure what else to do...

Other than that, i like this reactor a lot, it fits perfectly in one of the back chambers of my biocube, also helps pull water up from the lower intake grills. I dont see any co2 bubbles reaching the surface so dissolving rate should be close to 100%, just the noise...the constant never ending click click click!

The glass diffusers are never an option for me, they always get dirty after a while, not to mention blowing bubbles all over the tank destroying its "waterless" crystal clear look, also not that efficient.

Other power reactors are either too big, or i cant find a good way to secure the co2 tube properly.

The best option of course is the inline co2 reactor that uses counter-current for guaranteed 100% co2 absorption, not to mention completely silent and does not take up tank real estate. But that's not an option for me since I have a biocube and doesnt have a canister filter.

Anyway long story short (i know too late!), still using the elite diy reactor as it is the best option for me, but the noise is really annoying.
 

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Discussion Starter #265
This is the end of this thread.

The reactor is too loud. It can't be used in a room smaller than 10 000 sq. ft. You will go deaf or even worst.

Please do not try to see if it's loud indeed. It's horribly loud. Bad for your health. Some of the sound waves approach 7 Hz (or whatever the number is - the frequency that kills you right away).

As an alternative try this, it's beautiful, efficient, and completely quiet:
http://www.youtube.com/user/tacomanoffice1423#p/a/u/1/a1VvvzGvPJ4

--Nikolay
 

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This is the end of this thread.

The reactor is too loud. It can't be used in a room smaller than 10 000 sq. ft. You will go deaf or even worst.

Please do not try to see if it's loud indeed. It's horribly loud. Bad for your health. Some of the sound waves approach 7 Hz (or whatever the number is - the frequency that kills you right away).

As an alternative try this, it's beautiful, efficient, and completely quiet:
http://www.youtube.com/user/tacomanoffice1423#p/a/u/1/a1VvvzGvPJ4

--Nikolay
Nikolay, don't close this Thread...this is a very helpful post for all the new comers and for those who haven't tried this method yet...The Reactor is not loud if you play around... I did all the methods...but the best method I found to cut the chopping noise is Instead of removing "the green flow control slider" Let it stay there where it is originally. Right below the Slider drill the hole that fits co2 tubing and there you go No noise at all... Concluding this after trying in 3 different Filter/Reactor!
 

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I just set up DIY CO2 last week on my new planted Solana 25 gallon tank. For those that aren't aware of this tank, it has a hidden compartment in the rear that houses all the filtration and an area for a protein skimmer (for salt water setups) and heater. I had been using the pump that comes as part of the protein skimmer to inject CO2. This pump basically was working under the same concept of this Hagen CO2 diffuser. The CO2 gets mashed by the blades in the pump and turn into tiny microbubbles. The problem is that the location of this pump in the Solana is probably less than ideal being in the first chamber of the filtration system, meaining the dissolved CO2 has to pass over the filter pad in the second chamber before getting to the third chamber where the filtration pump is. I could have moved this pump to the main tank instead of the filtration section in the back but I didn't want to see it in the tank. So, that's when I came across this message thread. The Elite Mini is a little smaller than the pump I had been using and is easier to hide. So, I stopped by my local Petco last night and got the second to last one they had. I had it running over night last night and my pH went from 7.8 to 7.0. Granted, 7.0 is the lowest reading I had gotten with the other pump I was using as well. It's amazing to me the pH was up to 7.8 after a few hours of the CO2 not being injected (while I worked in the tank to rearrange things). So far I can't say the Elite Mini is working better than the other method but maybe I need to give it a little more time? I know it's at least working just as well. I just really thought it would work much better moving it into the main tank instead of back in the filtration section.

One idea I had was to put it in the third chamber of the filtration section right next to the filtration pump so that the microbubbles would be sucked into the filtration pump and sent out into the main tank. That would accomplish good spread of the bubbles to the main tank (with further dissolving likely happening in the filtration pump) as well as being a place to hide the Elite Mini out of sight.

This is what the Solana looks like from the back. The idea is to put the Elite Mini CO2 diffuser in the last/third chamber on the left (where the number 2 is in the picture). Any thoughts?

UPDATE: I attempted to put the Elite Mini in the third chamber where the filtration pump is but it's a really tight fit and I didn't like that I would have to essentially put the filtration pump on top of the Elite Mini. So, I scratched that idea and put it back in the main tank. I guess I will get used to the idea of having some hardware in the tank. I really was trying to keep everything concealed in the back of the Solana.

Back view



Front view



Oh, and by the way, I agree it is not loud. The pump I had been using made a much louder sound. I have to put my ear up to the glass of the tank to hear the Elite Mini mash the CO2.
 

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I just set up DIY CO2 last week on my new planted Solana 25 gallon tank.

UPDATE: I attempted to put the Elite Mini in the third chamber where the filtration pump is but it's a really tight fit and I didn't like that I would have to essentially put the filtration pump on top of the Elite Mini. So, I scratched that idea and put it back in the main tank. I guess I will get used to the idea of having some hardware in the tank. I really was trying to keep everything concealed in the back of the Solana.
UPDATE 2: I checked the pH this morning and it was down to 6.8. That's the lowest reading yet since setting up DIY CO2 last week. I know the CO2 output of the yeast mix is not consistent therefore readings can fluctuate so I'll have to keep testing it and see if it consistently stays that low. The KH is 6 or 7 (depending on how you define bright yellow with the API KH test) so the CO2 should be somewhere between 28 and 33 ppm. Even if I go with KH at 5 (which is where the solution "just" started to turn yellow) the CO2 should be at least 23 ppm. So, I'm pretty satisfied with the results I'm getting. Now the question is how long does the CO2 production last. I'm using two 1.9L gatorade bottles with T connection into a 20oz bubble counter. I started the second bottle only a day after the first one but I plan to prematurely replace the first bottle sometime in the next few days to get my offset going. This will work out assuming I get 3-4 weeks production out of each of these bottles (replacing one bottle every 1.5-2 weeks).

Thanks Niko for this really cheap and simple CO2 diffuser idea!
 

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I heard about this reactor from T Money $$ and man it does a great job. You could spend $50.00 or more on reactors on the internet and they wouldn't come close to the job this one has done. I have a 60 gallon tank and I'm running just 1 reactor off a two 2 liter setup, I've see significant growth in all my stem plants. I would recommend to everyone thats running DIY CO2, if not for you main reactor just a backup.
THANKS NIKO
 

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Discussion Starter #271
Allright,

Here's some news from me:

1. As I said above - I'm running one of these reactors in a 180 gallon tank:

The reactor does a great job lowering the pH with at least 1 point. I don't trust my pH meter for exact values but it definitely shows a drop of 0.8 - 1.0 when the reactor is running.

2. BBA grew on the sponge itself. I guess that speaks against the notion that increased CO2 prevents BBA.
The CO2 injection rate is fast because the tank is big. With that CO2 rate the reactor is making a cloud of tiny bubbles - measuring 3/4 ft. tall and about 8 in. wide. BBA does not care and grows on the sponge.

So I removed the sponge and let the reactor shoot bubbles under the Bolbitis bush. Also I put the CO2 on a timer. Now it turns on 1 hour before my lights come on. It shuts off 1 hour before the lights shut off. Guess what - the pH still drops about 0.6 - 0.7!

So it definitely 1 (one) of these reactors if fine in a 160-180 gallons tank with soft water (4-5 hardness). Even if you turn the CO2 at night.

--Nikolay
 

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Can someone explain to me what a 'needle wheel' is....and if any of you have done it....

And what has it done? Make the bubbles even finer?

ANOTHER QUESTION - What do I do with this venturi bulb thing that comes on the end of a 7" piece of tubing? Should I still attach it to the little hole on the output for it? What is it supposed to do?

Thanks guys.
 

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Can someone explain to me what a 'needle wheel' is....and if any of you have done it....

And what has it done? Make the bubbles even finer?
Click me. :cool:

ANOTHER QUESTION - What do I do with this venturi bulb thing that comes on the end of a 7" piece of tubing? Should I still attach it to the little hole on the output for it? What is it supposed to do?

Thanks guys.
No, if you find things getting sucked or stuck in there, snip a small piece off the airline tubing and melt the one end closed and then pop it over the venturi. You could also just melt close the venturi as someone mentioned, but I'm pretty sure that would void the warranty. That little bulb thing as you say is called a valve and used to control air flow.
 

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Anyone have trouble running a lower BPS rate with this reactor? I basically have to have the bubble counter rate at full blast to maintain 30ppm/ light green in drop checker.
I would say I have about 20 bps going..... thoughts?
 

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I had my diffuser pooched the other day (not sure why) and I had one ofhtese little units as a spare ... it works like a charm!

I really did want to buy another diffuser.

Thank you very much for this thread!
 

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I ordered 2 from petco at amazon (cheaper shipping from petco's amazon storefront than from petco's website!)
I also ordered 2 packages of the extra foams. So, I left the filters stock (although I did take off the venturi tube) and added extra the foam onto the outlet. There's already a hole in the foam, I just stretched it over the outlet nozzle.
I left the foam inside the filter in and put my CO2 hose below the filter. The CO2 bubbles into the filter, collects on the filter foam, bubbles up into the top of the filter chamber, and eventually gets into the impeller. After it gets into the impeller, it gets chopped up and launched into the second foam and sits there until it is dissolved.

I'm worried that this might be way TOO efficient for my 10 gallon tank. I'm just using DIY CO2, 1 liter, 1/3 tsp yeast. Am I going to kill my shrimp?
 
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