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Cheapest/Best CO2 Diffuser

This is a discussion on Cheapest/Best CO2 Diffuser within the Beginner Planted Aquarium forums, part of the Beginner Freshwater Aquarium category; --> I was going to be doing this 4. How to make a DIY Co2 System for Planted Aquariums - YouTube 4. How to make ...

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Cheapest/Best CO2 Diffuser
Old 06-26-2013, 11:21 PM   #11
FishyFishy89's Avatar
I was going to be doing this

And from what I've read, there isn't a whole lot of yeast that is going to be used. There was always more sugar than yeast being used.

IDK why I kept thinking I was using an air for some unknown reason was getting stuck in my head.

My lighting is 2 flourescent blubs. Both 48" and 6,500k 32W daylight bulbs.
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Old 06-27-2013, 01:05 AM   #12
Yes I have used that same DIY system in the past for short time before getting a proper CO2 setup but it was for a 20 gallon tank.

You don't really require CO2 at that light level on a 75 gallon. A good fertilizer regime would likely give you better results then messing with CO2, as well as switching to a non-HOB filter and reducing surface agitation as much as possible.
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Old 06-27-2013, 10:16 AM   #13
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The cheapest and best one is none at all. They are a waste of time in my personal opinion.
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Old 06-27-2013, 12:24 PM   #14
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The water line is always above the end of the HOB.

I do think I'll give the CO2 a try. I add liquid fert regularly and root tabs about every 2-3 months. So it probably really won't hurt to give it a try. I found a good defusser on ebay.
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Old 06-27-2013, 12:55 PM   #15
You can definitely give it a shot and see how it works. If you feel like seriously moving onto CO2 watch craigslist for a cheap used CO2 tank/reg. These are often used by home brewers (kegerators) and can be sold quite cheaply compared to an aquarium system, sometimes hydroponic ones show up too. You would have to replace the output on the regulator with a hose barb for aquarium CO2 line but thats not that difficult. You would also need a inline bubble counter, needle valve, and check valve but you can get those reasonably cheap off ebay.

Typically CO2 is suggested when you are running 2WPG or higher of HO T5s or similar high intensity lights along with heavy daily fertilizing. Just don't be surprised if you don't see too much of an boost from your yeast system. A standard system requires very little care compared to a yeast system. Only refilling of the tank every 3+ months depending on the size. CO2 is usually pushed more towards plant propagation or very high light red plants. I've been using a system for about 5 years now and certainly would not call them a waste as long as the lighting and fertilizers are high enough to require it.
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