150 Gallon aquarium Large DIY CO2 system
Channel: Andrew Fox
Date: 2012-06-24

I couldnt find a setup online for a large CO2 system as most tanks only need a 2 litter system.  Sounds like a 2 litter system is only good for ~30 gallon tank. I created a 18 litter system using a water cooler jug, 10lbs of sugar, 1 pack of the bakers yeast and the rest is water. The entire cost of the setup was ~$20 without the pump.  

For the diffusion into the tank I used an old pump from a UV sterilizer.  The pump is pretty powerfull 1500L/H and has a attachment for the airline to attach so that the air enters the exit valve after the water is past the propeller. The air becomes chopped up by the water current and very small bubbles exit the pump.   I would like to remind anybody that uses a pump for their CO2 diffusion to make sure the air does not enter the system before the water enters the pump, as that will cause stress on your pump and it will burn out quicker and it will be very loud. 

FYI the video ends wierd because the automatic lights turned off on the tank.