If you use the RIGHT drill bit you do not have to silicone the hoses into the caps.

Ill get pics of mine later, I am running a 4 bottle system with 1 accumulator and two powerheads for reaction.

I use brewers yeast, it lasts longer then bakers yeast or Jell-o, same principal, add a smidge of brown sugar to the mix and you got a 2 liter that lasts for atleast 20 days.

Winemakers or Brewers yeasts are the ones to use, active dry baking yeast consumes too quickly, brewers yeast lasts longer mainly due to the brewing process lasting longer then baking breads.