View Full Version : Bubble Counter Plans

10/11/2007, 10:12 PM
Hi All

I need to build a new bubble counter for my calcium reactor. It's a DIY reactor and the counter works half of the time. It's very difficult to get set up and then if I drain the reactor I have a heck of a time getting the counter to refill.

If anybody has build one I would love some ideas.


JetCat USA
10/11/2007, 10:16 PM
just include it as part of the recirculation loop, it'll stay filled then

10/12/2007, 07:41 AM
Get a very small bottle from bottled water or the like. Put two pieces of rigid airline tubing through the cap, seal with silicone or epoxy. Make one long enough to almost reach the bottom, the other one barely poking through the top. The long one is the input, the short one is the output. This will be bigger than most bubble counters, but that's OK - makes it easier to count individual bubbles IME, especially at high rates.

Fill it with glycerin, which doesn't evaporate away like water will. Though this design makes it easy to open and refill if you ever need to, and you can remove/replace the cap without disturbing the fluid.

10/12/2007, 08:05 AM
What I have started doing on the reactors I build is use a small piece of clear PVC on the CO2 intake to the reactor that will fill up with water when the reactor is running. The CO2 intake is run straight down for a few inches so you can see the bubbles come up.

Or to build a stand alone unit Like Derwillezurmacht says a small bottle will work fine, sometimes hard to seal the lid though.