my DIY co2 can last for 1 ~ 1 and half months with 1 bps..
just put more sugar and less yeast and it will last longer and make sure to pour those water or those white jelly out bout every one week and add some yeast and also some fresh water.. cuz those alchoholic water will kill the yeast..

My low tech tank with only normal river sand




This post has been edited by mudz: Aug 5 2007, 02:19 PM

for me.. those snails is quite nice.. add some life to ur tank.. but puffer fish will eat them...