OK, I have now managed to set up my pressurized set up. I am using a twin gauge Deltec regulator with needle valve, an Aquamedic bubble counter, with a 14lb bottle, feeding the CO2 directly to the intake of my Eheim Pro II 2028.

Firstly, I have set the regulator pressure @ 1 bar, is this enough?

Bubble rate is 1 bubble per second.

Now to my main worry, TANK DUMPS!!!

I have read a few horror stories about bottles dumping their last load of CO2 into the tank when they are coming to the end, killing all the inhabitants. Can this catastrophy be avoided and if so, how?

Many thanx for your much needed advice!


Planted Discus tank. (300 litres)

Temp - 84

NH3 - 0

NO2 - 0

NO3 - 20mg/l

pH - 6.5

KH - 2 degrees

GH - 8 degrees