Running DIY Co2 Through a c-160?

You could just stick it underwater, somewhere, until you see bubbles comming out. Then move it to the intake.

My biggest concern was wanting to know when it quit working. And well, how much I'm getting in general. DIYs can do some fluctuating.

Did you get one of these? > http://www.bigalsonline.com/BigAlsUS/ctl3684/cp18478/si1380875/cl0/redseaco2indicator

And if your mixture gets less and less(as in water lvl?), somethings wrong, somewhere.
 
My biggest concern was wanting to know when it quit working. And well, how much I'm getting in general. DIYs can do some fluctuating.

Did you get one of these? > http://www.bigalsonline.com/BigAlsUS/ctl3684/cp18478/si1380875/cl0/redseaco2indicator

Ya i need to get one of those. Much more reasonably priced than the glass drop checkers on green leaf aquariums. Although... i wonder if that device is good for all tank sizes? I'm going to be upgrading to a 75g sometime in the future (after i gather all my stuff for it), and i want something to work on that too!
The best way that i can tell so far that i have good co2 saturation is by checking my pH. When it starts to rise, i'm running out of co2.
 
The level of the mixture won't fluctuate. It will just look like the same cloudy water for the life of the mixture. Like SMinNC said, if it starts to decrease in level, you've got a serious leak somewhere.
 
Well, a 2 liter bottle generator generally lasts around 10-14 days, depending on the recipe you use.
If you shake it after 8 days or so, and not as many bubbles are coming out, then it's getting ready for a recharge.
Also, you should monitor your pH levels closely as the co2 starts to roll. The pH will drop, and then stabilize as your co2 saturates the water. When the pH starts to rise again, you're running low.
Most reliable method is the drop checker though.
Maybe we can get some more seasoned experts in here to give some advice though.... i'm pretty new to the diy co2 as well!
 
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