I use 3 1 gallon jugs in a 37 gallon tank. My mix is:2 liters water, 3/4 tsp. bread yeast, 1 1/4 cups sugar, 1 tsp. protien powder, 1/2 tsp baking soda, 1 tbsp. honey. I change 1 every week. My tank's co2 level starts at about 45 ppm, and ends at about 30 ppm. I use a HOB filter with a spray bar. That's probably why I need so many large bottles.
40 gallon SeaClear Acrylic, 192 watt Orbit Lunar PC, Filstar XP2, Filstar XP1, JBJ Regulator, Rhinox 5000 glass co2 diffusor, 9 watt UV sterilizer, Hydor Inline Heater, Pool Filter Sand substrate
Filstar pimp #53
How comes shoppings so stupid, looks at all this stuff I haves, what do I do's with it.