Fully automated semi DIY CO2 system
I just replied to a person looking for a cheap automated CO2 system in the Swap and Shop. I wanted to post it here as well, because it could help people get a really good system up for less than half of what I paid for my fully automated CO2 system. I admit this isn't fully DIY, but it is a way to make DIY CO2 worth it's weight in gold.
Here is the text of my post:
I just spent $350 on a complete CO2 system and it works great. There was a problem with a leaky bubble counter at first though, so I hooked up my DIY 2-liter bottle of yeast CO2 to the reactor in the fish tank instead of the CO2 gas. I was surprised at how effective it was at regulating the PH of the tank and a little bummed out that I had just wasted about $150 unnecessarily. I can tell you that you can make an effective CO2 system based on that for about $150.
Milwaukee PH Controller = $80
Rio Reactor 200 = $50
Silicone tubing = $5
Grand Total = $135
This would be a very effective system for a 40 gallon tank, considering in a moderate light 75 gallon tank a single 2-liter bottle did a good job of regulating the PH, mostly due to the effectiveness of the Rio 200 reactor. The only downfall is that the effectiveness of the system would vary, based on the output of the yeast culture and you likely couldn't jack it up to get a PH of 6.5 unless you had really soft water.
If you have any more questions, PM me.
While I wouldn't trade my current system for anything (the results are amazing), I would have definately preferred to keep that extra $215 in my pocket. If I had the chance to do it over, I would probably go with the DIY yeast system.
Two 1 GA desktops, a 5 gallon, a 2.5 gallon, a 10 gallon, a 20 gallon, a 25 gallon, and two 75 gallon tanks, all planted.
I am an expert on algae, so ask me if you have questions. I know how to grow it, just not how to get rid of it.