Reactor
Materials
1 2 Liter Bottle
1 Check Valve
3' Airline tubing (Length can vary)
1 Tube of Silicon Sealant
3 Airline tubing suction cups (Number may vary)
1. Drill small hole in 2 Liter Bottle cap. The hole should be smaller than the diameter of the airline tube. About 1/2 or 3/4 the size works well.
2. Cut a six inch piece of airline tube. Cut one end of this six inch airline tube at an angle to form a pointed tip.
3. Using the pointed tip part of the six inch airline tube, thread it through the hold drilled in the 2 liter bottle cap. Pull it until it is about 1" or 2" through the hole.
4. Seal both the top and the bottom of 2 liter bottle cap around the airline tubing with the silicon sealant. Wait 24 hours for it to dry.
5. Attach the check value to the end of the airline tube that is going to be outside the 2 liter bottle.
6. Attach the rest of the airline tubing to the other end of the check valve.
7. Using the suction cups, place the other end of the long airline tubing in the tank.
Bell Diffisor
Materials
1 20oz Soda bottle.
1 Airline tubing suction cups
1. About 2" or 3" from the top, cut the top completely off of the 20oz soda bottle.
2. With the cap on the top of the 20oz soda bottle, drill a hole for the suction cup in the cap.
3. Place the suction cup in the hole.
4. Seal the suction cup to the cap with silicon sealant. Wait 24 hours for it to dry.
5. Attach bell diffusor to tank above co2 airline.
Yeast Solution
Materials
Tepid dechlorinated water (Does not feel warm, does not feel cool).
1/4" teaspoon yeast
2 Cups sugar
1. Fill a small cup with tepid dechlorinated water. Add a small amount of sugar and all the yeast into the cup. Stir somewhat vigoursly with a fork for maybe 10 seconds or so.
2. Fill the 2 liter bottle with the rest of the sugar.
3. Fill the 2 liter bottle half full of tepid dechlorinated water.
4. With the cap on (or your hand over the top), shake the bottle to mix up the sugar.
5. Fill the 2 liter bottle with tepid dechlorinated water to just below the point where the bottle begins to curve.
6. Add the contents from the small cup to the 2 Liter bottle.
7. Attach to tank at anytime (Usually takes an hour to start producing CO2 though).
I hope that makes sense. Its really easy. I described a bell diffusor because those are simplest. Someone else might need to explain an active diffisur if you want one because I've never done those.