Nixu's Aquarium setup (Work in progres)

[niksunen]

c02 dumping has been a factor in using calcium reactors in reef tanks for years where we also don't use bubblers :)

Well i think this is easy to "fix" just add preasure meter / "probe" to co2 line. And reads it value to arduino. And if co2 preasure start get low / or too high it closes magnetic valve, and makes alarm to screen. I think you only need that little preasure meter, little wire and couple lines of code, so easy job to done :) 

I think i add it to my setup, but i want to know how much co2 is left, so i going to diffrent way, so that way i am going to use scale, to measure whole co2 set weight and so i can calculate how much co2 is left. And uses this data to show it screen, graphs, and send me email reminders that is time to change bottle :)

Edit, you can use like this psi meter http://www.digikey.com/products/en?mpart...00DP&v=568