Aquatic Plants.. update

The lid of the CO2 reactor bottle, cut the tube on an angle to get it through the hole

 I learnt from my first try that everything has to be really, reallllly airtight. Im using iced tea bottles now with the rubber seals inside the caps which helps a whole lot. The yellow lid is the CO2 reactor lid, the airtube needs to be above the level of the yeast mixture in the bottle.

The CO2 tube needs to be deep enough in the bubble counter to be under water

The orange lid is the bubble counter, it is basically used to see how much CO2 is being created in your reaction and helps remove any yeast mixture before the final tube collects the gas and takes it into the tank. I used silicone to seal the holes.

CO2 reactor with the yellow lid, bubble counter is orange

 I used a more potent yeast mixture this time, the reaction will not last as long but it will create more CO2. The sugar, water and bi-carb remained the same and 8g yeast... (2 cups sugar, a pinch of bi-carb and 3/4 of the bottle filled with warm water)

the bubble counter produces about 3 bubbles per second and is diffused into the aquatic tank via airstone