Flow Chart CO2 in Aquascape

The Part list:

(A) If the power head is placed into the tank a sponge prefilter can be used. They sell a sponge filter for turtle tanks that works great. You could also use a filter inlet tube attached to a legnth of hose and have the power head outside of the tank.
(B) Maxi-Jet 600 Power head. Comes with a bunch of useful parts. The tubing from the CO2 connects to the venturi adapter. Get the model that has the flow rate that you want.
(C) 10" Python gravel tube. I bought two and used both caps (D) and hoses (E) on one tube to make the reactor/canister.
(F) Good spot for a check valve
(G) Airline tubing
(H) I made a spray bar out of 1/2" PVC with an end cap and a elbow
(I) A lot of people have trouble with leaks. I use a rubber stopper. I drill a hose through it and push a piece of plastic airline pipe through, then I attatch the airline hose to the pipe. I still use this method with no leaks.
(J) Airline T
(K) 2 litre pop bottle
(L) Rubber stopper
(M) 20oz pop bottle this catches and yeast liquid so it doesn't enter your tank

Yeast recipe

Per 2 litre pop bottle

6 cups warm water
2 cups sugar
1/4 tsp. yeast
1/2 tablet of tums

The reactor/filter hanging on the back of the tank. At the bottom I have a sponge and on top of that some ceramic noodles. The CO2 enters the flow right before the gravel tube so it gets beat up by the water flow, the noodles, then through the sponge.